BELGRADE (AFP) - Arsenal manager Arsene Wenger, who admitted he didn't recognise the team which slumped to defeat to West Brom at the weekend, faces a crucial week which could define his side's season.
The Gunners' Premier League aspirations will be under the microscope at Stamford Bridge on Sunday when they take on Chelsea.
But Tuesday sees a test of their backbone as well as their style in a tricky Champions League trip to Partizan Belgrade.
The Serbian side, playing in Europe's elite event for the first time in seven years, have never won a home tie in the competition, but will have taken heart from the way that unheralded West Brom picked their way through a sleepy Arsenal backline in the 3-2 win on Saturday.
Wenger has little time to solve the mystery of that Emirates fiasco.
"I didn't recognise my team and we have to sit down together to analyse what happened," said the coach.
"Something was not right. It's unusual to see a team as flat as we were."
Goalkeeper Manuel Almunia was widely condemned for another poor performance and Wenger, who courted Fulham's Australian goalkeeper Mark Schwarzer in the summer, is believed to be lining up a bid for Liverpool's Pepe Reina once the transfer window reopens.
But that is not until January.
Almunia has been ruled out of Tuesday's game with an elbow injury and will be replaced by Lukasz Fabianski.
Wenger insisted Monday he would have played Almunia if the keeper had been fit.
"We have Manual Almunia out," Wenger said. "He has a problem with his elbow. He caught it when he made the penalty on Saturday.
The French boss added: "(The goalkeeper) is always the easy target, the easy scapegoat.
"But we win together and we lose together even if people think he made a mistake on the second goal."
Arsenal won their opening Champions League game 6-0 against Braga on the same night that Partizan lost 1-0 at Shakhtar Donetsk.
But the Gunners' away record in Europe doesn't make comfortable reading for Wenger with his team having lost their last three away games - 4-1 at Barcelona in last season's quarter-final, 2-1 at Porto in the round of 16 and 1-0 at Olympiacos in the the group stages.
They have only won two of their last 10 away matches in the competition.
When Partizan last appeared in the Champions League in 2003/2004, they failed to win at home in five attempts, including two qualifying rounds.
But a defeat to Newcastle was their only loss, the other four games all ending in draws.
This season, they saw off FC Pyunik and HJK Helsinki in the qualifying rounds before defeating Anderlecht 3-2 in a penalty shoot-out win after two play-off games each finished 2-2.
Brazilian striker Cleo scored three goals over the tie, including two in the away leg.
Experienced midfielder Sasa Ilic will be expected to dominate proceedings in midfield for the Serbian champions.
|Aubameyang commits to Dortmund|
|Torres on the hunt for trophies with Atletico|
|Cazorla and Walcott sign new Arsenal deals|
|Quick start vital in Arsenal title bid - Wilshere|
|I have received no offers - Guardiola|
|Barcelona to monitor Turan injury|
|Zorc ´surprised´ by Grosskreutz-Tuchel row|
|Phil Neville could be England manager - Moyes|
|UEFA to investigate Shakhtar´s Fred selection|
|City loan Unal to Genk|
|China v South Korea: Stielike looking for new options|
|North Korea v Japan: Halilhodzic to unearth new faces|
|Drogba: I want to be ready, not a burden|
|Hamstrung Clasie in doubt for Southampton league opener|
|West Ham goalscorer Zarate bemoans Astra comeback|
|Negredo quashes Valencia exit rumours|
|´This is not my Sampdoria´ - president Ferrero|
|Criscito could join Inter - agent|
|CBF endorse Zico´s FIFA presidency campaign|
|Hawit to handle CONCACAF´s referee review|
|Falcao is a ´top, top player´ - Terry|
|Tuchel pleased by Dortmund fighting qualities|
|Premier League rules out schedule changes for Champions League clubs|
|UEFA Europa League Review: Southampton stroll as Sampdoria are humiliated|
|Koeman confident of Southampton progress|
|Bilic frustrated with Collins´ red card, Valencia injury|
|Bamford hits hat-trick in Bromley friendly|
|Southampton 3 Vitesse 0: Play-offs in sight for Koeman’s men|
|Wolfsberger 0 Borussia Dortmund 1: Tuchel begins tenure with narrow win|
|West Ham 2 Astra 2: Collins red allows visitors back in|
|Kukesi - Legia match abandoned|
|Joining Roma an ´easy decision´ - Szczesny|
|Chiriches joins Napoli from Spurs|
|Mihajlovic pleased with Milan improvements|
|Injured Chiellini to miss Supercoppa|
|Newcastle complete Mbemba swoop|
|Blackpool protest incurs FA fine|
|Scottish Premiership Preview: Dons seek to run Celtic closer|
|Paris Saint-Germain v Lyon: Ibrahimovic ready for season opener|
|Wolfsburg v Bayern Munich: De Bruyne centre of attention|
|Real Madrid 0 Milan 0 (10-9 on pens): Real lift second International Champions Cup|
|De Bruyne a doubt for Supercup clash|
|Reine-Adelaide needs time to blossom, says Walcott|
|Rodgers will not rush Ibe development|
|Napoli not interested in selling Higuain - De Laurentiis|
|Wilson agrees Bournemouth extension|
|Messi makes early Barcelona return|
|Ibrahimovic: My next move will be a very big surprise|
|Van Aanholt backs Lens to shine|
|Besiktas complete loan move for Gomez|
|McClaren: No decision on Coloccini future|
|Kane, Kaka hail goalkeeper Rimando|
|Chung eager to become FIFA president|
|Yedlin open to loan move|
|Tigres not scared of River trip - Ferretti|
|MLS Preview: Wright-Phillips, Lampard set to debut|
|´A draw is good for us´ - River´s Gallardo confident of Libertadores success|
|Di Maria poised for PSG switch - Blanc|
|Franjic: Bring on Bangladesh, Tajikistan|
|Van Gaal bemoans De Gea situation|
|MLS All-Stars 2 Tottenham 1: Kane stunner can´t spare Spurs|
|Manchester United 0 Paris Saint-Germain 2: Van Gaal´s defensive frailties exposed|
|Tigres UANL 0 River Plate 0: Visitors lose Gallardo in Copa Libertadores final first leg|
|Penedo parts ways with Galaxy|
|Benitez backs Mihajlovic, Milan to succeed|
|Barnetta joins Union in MLS|
|Allegri critical of Morata´s attitude|
|Franjic targets more A-League glory with City|
|Beto undaunted by Super Cup clash against Barca|
|Advocaat upbeat despite another Sunderland flop|
|McClaren praises Newcastle recruit Mitrovic|
|Payet will improve West Ham - Bilic|
|Pulis confirms interest in Lambert|
|Deila expects tough test in Baku|
|Drogba mobbed by Montreal Impact fans|
|UEFA Champions League Review: Ajax spurn two-goal lead at 10-man Rapid|
|Sunderland´s struggles continue as Doncaster cruise to win|
|Mahrez and Nugent on target in Leicester win|
|Mitrovic tastes debut defeat for Newcastle|
|Celtic 1 Qarabag 0: Boyata snatches crucial win|
|Jablonec 0 Copenhagen 1: Verbic cracker gives Danes the edge|
|Norwich sign Wisdom on loan from Liverpool|
|UEFA Europa League Preview: Koeman plays down importance of Vitesse links|
|Schneiderlin keen to learn from experienced duo|
|Mandzukic´s maiden Juventus goal seals win in Poland|
|Fofana completes Bastia loan|
|Deila delighted that Gordon pledges future to Celtic|
|Grenier ruled out for four months|
|Rooney: United squad ready for title challenge|
|Messi and Neymar available for start of season|
|Szczesny seals Roma switch|
|Benitez cools Mourinho war of words|
|Filipe Luis vows to win back Atletico fans|
|Besiktas in negotiations over Gomez switch|
|Kishna seals Lazio switch|
|Diaby completes Marseille move|
|Platini is bad for FIFA - Prince Ali|
|Bilic keen to make further additions|
|Brady makes Norwich move|
|Southampton complete Caulker loan|
|Rummenigge feels Muller ´will never leave´ Bayern|
|Platini to stand in FIFA presidential election|
|Howedes to remain Schalke skipper|
|Albion sign Hull defender Chester|
|Lucescu defends Fred selection amid doping allegations|
|Fabregas still in love with Arsenal|
|Luis Enrique ´happy´ with Barca´s US trip|
|Mourinho optimistic over Cahill and Costa|
|River owe Tigres´ Esqueda - Mercado|
|Van Gaal expecting big season from Shaw|
|Begovic keen to challenge Courtois|
|Mourinho launches attack on Benitez|
|CONMEBOL ´knocked on a lot of doors´ to keep half-spot - president|
|America 0 Benfica 0 (3-4 on penalties): Primeira Liga champions finally win|
|Napoli striker Higuain ´untouchable´ - Gabbiadini|
|Arsenal´s friendly form will boost confidence - Wenger|
|Nagatomo-Melo swap possible, says agent|
|Chelsea 2 Barcelona 2 (4-2 on penalties): Courtois stars for Premier League champions|
|Eriksen calls for ruthless Spurs|
|Pulis praises Berahino attitude|
|Alderweireld confident of top-four finish|
|Villa ready for tough Spurs clash|
|West Ham edge win on Carrow Road anniversary|
|Kozak scores twice as Villa draw at Wolves|