LONDON (AFP) - Arsenal manager Arsene Wenger will make a decision on whether Cesc Fabregas will play in the vital Champions League game with Porto in the next 48 hours after the Spain star's latest injury setback.
Soon after scoring in Arsenal's 3-1 win over Burnley in the Premier League at the Emirates Stadium on Saturday, Gunners captain Fabregas suffered a recurrence of his hamstring problem.
He is now rated doubtful for Tuesday's last 16 second leg tie against Porto, where Arsenal will try to overturn a 2-1 deficit.
"Cesc has a hamstring and how deep the damage is we don't know because it's too early," said Wenger.
"We will see tomorrow (Sunday) or Monday, it will be a late decision on whether he plays on Tuesday."
Fabregas's injury came just a week after Arsenal lost fellow midfielder Aaron Ramsey for the rest of the season with a broken leg.
But there was better news for Wenger in the performance of England winger Theo Walcott on a day which ended with the third-placed Gunners two points off the top of the table after champions Manchester United returned to the summit with a 1-0 win away to Wolves.
Walcott, after a disappointing display during England's midweek 3-1 friendly win over Egypt at Wembley, was subjected to a blistering attack by former international Chris Waddle.
Waddle insisted Walcott did not understand football but the 20-year-old produced a menacing performance at the Emirates to silence his critics.
"I was delighted with Theo because I think he did what a player has to, not talking in the newspapers but doing his talking on the pitch," said Wenger.
"He didn't answer any critics other than it was a good performance today. He showed he is mentally strong.
"I was interested to see how we would respond and I was quite sure Theo would respond with a good performance.
"You never know how deep it affects you when you get criticised and the way he answered it at his age was remarkable."
Turning to Arsenal's quest for the title, which continues next week with another match against relegation-threatened opposition in Hull, Wenger said: "It's down to our consistency. If we win our games we will be there, that's for sure. Every game demands full focus and commitment, especially against teams fighting to stay up.
"Next weekend we play at Hull and we can expect the same sort of game. We had the chances to score plenty of goals (against Burnley) and we didn't take them. It was tight until the end when we could have scored four or five."
Fabregas gave Arsenal a 34th minute lead before his premature exit.
Burnley, who only have crisis club Portsmouth below them in the table, hit back through David Nugent's equaliser five minutes into the second half.
But Walcott's excellent strike on the hour and a goal from Arsenal substitute Andrey Arshavin condemned the Clarets to their 14th away defeat of the season.
Nevertheless Burnley manager Brian Laws said: "There were a lot of pleasing things to come out of it, despite the result.
"We responded much better in the second half because too many times the players have folded this season after going a goal behind.
"It was nice to get the goal and then to actually look in a comfortable position. We knew Arsenal were going to create chances and we lived a charmed life on many occasions.
"But Arsenal took their chances whereas we snatched at ours and that is the difference between the two sides," Laws added. "We had good spells and we've got to make them count.
"I'm going to take a lot of positives," he insisted. "This isn't going to be the game that decides our future in the Premier League, the ones at home will do that. I still think we can get that first away win."
|52||N. Bendtner||10' 25' 44' 90+1'|
|Coach: A. Wenger|
for T. Rosický 57'
for S. Nasri 73'
for A. Arshavin 77'
|Thiago pledges future to Bayern|
|AFC Champions League Review: Urawa pay the penalty as Seoul advance|
|Uruguay v Trinidad and Tobago: Sanchez skips final to help Suarez-less La Celeste|
|Benitez ´convinced´ he can win trophies at Newcastle|
|Nigeria v Mali: Moses among many absentees for Super Eagles|
|Benitez to stay at Newcastle|
|Kramaric leaves Leicester for Hoffenheim permanently|
|Neustadter gets green light for Russia Euro 2016 selection|
|Chile v Jamaica: Copa plans crystallize in Vina del Mar|
|Ledley making progress in bid to prove Euro 2016 fitness|
|Gotze returns to Germany training|
|Ronaldo: Madrid would be smart to give me a new deal|
|Varane disappointed by Euros absence|
|Republic of Ireland v Netherlands: O´Neill wants confident display|
|Ronaldo shakes off injury in Real Madrid training|
|Atletico star Griezmann ´listening to different clubs´|
|United States - Ecuador Preview: Klinsmann pins hopes on Yedlin as Copa preparations continue|
|Gold tells Middlesbrough to ´dream on´ over Antonio|
|Schweinsteiger wants Mourinho to spice up Manchester derby|
|England v Australia: All eyes on Rashford debut|
|Aggressive Premier League better for me - Xhaka|
|Schweinsteiger ´right on schedule´ for Euro 2016|
|Darmian relishing Euros after return from injury|
|Northern Ireland v Belarus: Last chance to impress as O´Neill prepares to trim squad|
|Ventura leaves Torino amid Italy talk, Mihajlovic appointed|
|Sevilla confident of keeping Emery|
|Godin wants Atletico to use 2014 defeat as inspiration|
|Xhaka agrees Arsenal move|
|Idolisation of Ibrahimovic warranted Sweden captaincy - Hamren|
|Scholes hopes Mourinho keeps Giggs at Manchester United|
|Gotze snubbing Liverpool will boost Germany - Bierhoff|
|Bosz honoured by Ajax appointment|
|Ramos highlights Griezmann threat|
|Record-chasing Ronaldo and taming the Wolves - Real Madrid´s route to the Champions League final|
|Donnarumma dreams of being Milan captain|
|Koke: History, not revenge motivating Atletico|
|Costa Rica v Venezuela: Hosts ramp up preparations for maiden Copa America tilt|
|Argentina v Honduras: Messi and co warm up for Copa America|
|USA will win a World Cup, says Donovan|
|Pumas UNAM 2 Independiente del Valle 1 (3-3 agg, 3-5 on penalties): Hosts suffer shoot-out heartbrea|
|Gracia leaves Malaga as Rubin Kazan loom|
|Messi: Argentina deserve to be Copa America champions|
|Dybala included in Argentina´s preliminary Olympics squad|
|Mourinho and United a ´good wedding´ - Ancelotti|
|Klinsmann: Copa America better than Euros|
|Messi: Joining Barcelona not an easy decision|
|Carrico receives four-game ban for homophobic slur|
|Dani Alves wants Atletico to win Champions League|
|McNair out to impress ´world-class´ Mourinho|
|Ranieri: Premier League survival is Leicester´s priority next season|
|Argentina forward Lavezzi suffers hamstring scare|
|Koeman talks ´very positive´, say Southampton|
|Rami replaces injured Varane in France´s Euro 2016 squad|
|Matthaus applauds Gotze for rejecting ´easy solution´ of Liverpool|
|Suarez silenced his doubters - De Boer|
|AFC Champions League Review: Jeonbuk, Shanghai SIPG progress|
|Klopp can take Liverpool right to the top, says McAllister|
|Lindelof happy at Benfica amid Real Madrid, Barcelona links|
|Zidane is perfect on and off the pitch - Lippi|
|Bale: Zidane has brought the best out of Real Madrid|
|Favre takes over as Puel and Nice part ways|
|Liverpool complete Karius deal|
|Van Gaal was treated poorly by United, but Mourinho will be a success - De Boer|
|Dani Alves: I have won more titles than Pele|
|I know who I´m taking - Conte sure on Euro 2016 selection|
|Xavi backs Guardiola to ´change the face of English football´|
|Lucescu appointed Zenit boss|
|Manchester United and Liverpool hit with €40,000 fines|
|Weinzierl: I have nothing to lose at Schalke|
|Rangers complete Barton signing|
|Italy better placed as underdogs ahead of Euro´s - Motta|
|Cantona: I love Mourinho, but he is not Manchester United|
|Ben Arfa wants Lyon move - Aulas|
|David Silva praises Iniesta´s Copa del Rey heroics|
|´It was a little scare´ - Ronaldo plays down injury fears|
|Eder the real deal for Lille|
|Van Gaal treated unfairly during Manchester United spell - Daley Blind|
|Ginola doing ´very well´ after heart surgery|
|Depay rules out Manchester United exit following Van Gaal departure|
|Hojbjerg confirms desire to leave Bayern|
|Ronaldo leaves Madrid training early after knock|
|Abbiati unimpressed with Milan players´ attitude|
|Pepe calls on Madrid to continue making history|
|Ayestaran signs two-year deal with Valencia|
|Montolivo, Antonelli sign new AC Milan contracts|
|Ronaldo ready for UCL final after being rested from practice match|
|Hummels, Sanches deals will not stop Bayern spending - Rummenigge|
|Oblak´s penalty heroics, Griezmann´s Barcelona brace - Atletico Madrid´s route to the Champions Leag|
|Salvio all but confirms Gaitan will join Atletico Madrid|
|Motta warns PSG over Ronaldo, Neymar interest|
|Europa League Mourinho´s best hope for United trophy - Sheringham|
|Injustice if Iniesta never wins a Ballon d´Or - Del Bosque|
|Van Gaal didn´t deserve United sacking - Blind|
|I´ll be happy if we make Euro 2016 semi-finals - Del Bosque|
|Koke: Why would I want to leave Atletico?|
|Fofana could retire aged 25 - Lyon president|
|Sandro set to leave Barcelona|
|Silva plays down injury worries ahead of Euro 2016|
|United would be brave to appoint Mourinho, says Schmeichel|
|Neymar adamant he is happy at Barcelona|
|Wilshere: Arsenal play me out of position|
|Ryan backs former coach Neville|
|Keane talks up Galaxy move for Ronaldo|
|´Free agent´ Diarra wants Mourinho reunion|
|Eintracht Frankfurt beat Nuremberg to secure Bundesliga status|
|Manchester United to turn to Mourinho, the man who most resembles Ferguson|
|Manchester United kids are Van Gaal´s legacy - Ferdinand|
|´Sex-masochism´, ´fat man´ and ´Mr Mike Smalling´ - Van Gaal´s best quotes as Manchester United mana|
|I have fulfilled a long-held ambition - ´Very disappointed´ Van Gaal´s statement in full|
|Van Gaal should call time on career after Manchester United sacking|
|Better than Busby? - The stats behind Van Gaal´s United exit|
|Van Gaal sacked by Manchester United|
|Suarez expected to miss Copa America group stage|
|Herrera wants more trophies with Manchester United|
|FIFA sacks deputy secretary general Kattner|
|Asensio wants to fight for his chance at Real Madrid|
|SFA to investigate Rangers-Hibernian disorder|
|Van der Wiel takes aim at Blanc after PSG exit|
|Halilovic: Missing Euro 2016 would not be a tragedy|
|Van Gaal leaves United training ground as Mourinho speculation goes on|
|Zanetti rules out Inter move for Simeone|
|Rodgers adamant Celtic is not a step down|
|Sanches chose Bayern Munich over Manchester United|
|Rosicky was the perfect player for Arsenal - Wenger|
|Tonelli becomes Napoli´s first close-season signing|
|Thigh injury rules Steffen out of Euro 2016|
|Gotze is a perfect fit for Liverpool - Hitzfeld|
|Hummels completes Bayern move after passing medical|
|Guardiola era has been sensational - Neuer|
|Bayern will never sign a Messi or Ronaldo - Hitzfeld|
|Wilkins backs Mourinho appointment|
|Suarez´s Copa America hopes alive despite hamstring injury|
|Delneri exits Verona following relegation|
|Ireland´s Wilson ruled out of Euro 2016|
|Gotze looking forward to new season with Bayern|
|Pirlo, Giovinco out of Italy Euro 2016 squad|
|Coleman signs new Wales contract|
|Gotze talk intensifies as Bayern Munich forward leaves agent|
|Rami called up by France following Varane injury|
|United States v Ecuador: Klinsmann pins hopes on Yedlin as Copa preparations continue|
|Gabriel, Lucas Lima unsure on Santos futures|
|AC Milan to terminate Mihajlovic deal in June|
|Emery confirms Banega will leave Sevilla|
|Neville still unsure over Valencia future|
|Van Gaal arrives at United training ground amid Mourinho talk|
|Messi: We suffered but we won together|
|Evra confirms two-year Juventus deal|
|Son unfazed by Tottenham exit rumours|
|Argentine footballer dead after being struck in head|
|Arnautovic refuses to commit to Stoke|
|Sirigu: PSG wanted me out|
|MLS Review: Galaxy held by Earthquakes, Timbers end skid|
|Alba: Messi deserves credit for my goal|
|Pique: Barca deserved Copa del Rey title|
|Smalling admits relief after Lingard winner|
|Suarez, Barca unsure on extent of injury|
|Luis Enrique revels in Barca´s spectacular end to season|
|Emery proud in Copa del Rey defeat|
|Rooney hopes FA Cup lifts United - with or without Van Gaal|
|Iniesta: Copa del Rey win caps magnificent season|
|Barcelona 2 Sevilla 0 (AET): Alba and Neymar decide heated Copa del Rey final|