Borussia Dortmund boss Jurgen Klopp is confident defender Mats Hummels will recover quickly from a back injury sustained against Napoli.
Dortmund slipped to a 2-1 loss at the Stadio San Paolo in their opening UEFA Champions League Group F clash on Wednesday, goals from Gonzalo Higuain and Lorenzo Insigne proving enough for the hosts, despite a late own-goal from Juan Camilo Zuniga.
The defeat proved costly in more ways than one, with goalkeeper Roman Weidenfeller sent off and Hummels forced off shortly before the half-time interval with a back problem.
However, Klopp believes the injury is not serious and expects the Germany international to make a speedy return.
"He has received a blow in the back, on the sciatic nerve," Klopp said.
"He still has a lot of pain, but I assume, however, that it will be better relatively quickly."
Klopp was also shown a red card in the wake of Napoli's opener. The 46-year-old was sent to the stands for confronting the fourth official after the referee had refused to stop play for an injury to defender Neven Subotic in the lead up to the goal.
The former Mainz manager was quick to take the blame for the defeat, accepting that his conduct had been detrimental to his side's fortunes.
"I apologised straight after the game to the fourth official, the referee and my team as my emotions turned a game we didn't play well in into a hectic one," he said.
"The second half with a man down was okay. On good days, when the coach keeps his cool, we might get a result. Our start wasn't best, mine included.
"Had we played to our level we could have won the game. In this group everything is still possible. We will not throw anything away. We lost an away game, nothing else."
|24||L. Insigne||67' 68'|
|Coach: Rafael Benítez|
for L. Insigne 73'
for G. Higuaín 78'
for M. Hamšík 90+2'
|Republic of Ireland v Georgia: Given wary of confident Georgia|
|Northern Ireland v Hungary: History beckons for O´Neill´s men|
|Albania v Portugal: Winners will be all-but qualified|
|Scotland v Germany: Low expects smarting Scots to attack|
|France v Serbia: Deschamps eyes winning run|
|´Where are the stars of Manchester United?´ - Queiroz hits out at Moyes and Van Gaal|
|Sneijder demands improved display from Netherlands|
|Real Madrid make €1m pledge to help refugees|
|Ings: I can learn from ´fantastic´ Sturridge|
|Ozil: Scotland won´t stop us|
|Portugal will be better than France - Santos|
|Kruse: I am 100 per cent fit|
|Mexico 3 Trinidad and Tobago 3: Herrera the hero for Ferretti´s men|
|FFA expect Tajikistan match to go ahead despite Dushanbe violence|
|Panama 0 Uruguay 1: Stuani´s late header clinches win|
|CONCACAF World Cup Qualifying Review: Jamaica stunned, Canada win|
|Argentina 7 Bolivia 0: Aguero, Messi star in rout|
|Canada 3 Belize 0: Hosts dominate in Toronto|
|Chelsea ´warehousing´ players - PFA chief|
|United States 2 Peru 1: Altidore inspires hosts´ comeback|
|Argentina 7-0 Bolivia: Aguero, Messi & Lavezzi net doubles in rout|
|Del Bosque unmoved by calls for two strikers|
|Deschamps praise for beautiful France|
|Fekir ruptures knee ligaments|
|Italy v Bulgaria: Conte warns against complacency|
|Euro 2016 Qualifiers Review: Germany top Group D, Northern Ireland edge closer|
|Low: Three points most important|
|Northern Ireland on the verge of a ´magnificent achievement´ - O´Neill|
|Scotland need something against Germany - Strachan|
|Portugal 0 France 1: Late Valbuena set-piece clinches deserved win|
|Faroe Islands 1 Northern Ireland 3: O´Neill´s men edge closer|
|Germany 3 Poland 1: Gotze sends world champions top|
|Gibraltar 0 Republic of Ireland 4: Irish hopes reignited|
|Djibouti 0 Togo 2: Saintfiet´s side make it two wins from two|
|Cyprus v Belgium: Benteke boost for Wilmots´ men|
|Roma youngster faces lengthy lay-off|
|United hit back at Perez barb over De Gea saga|
|Georgia 1 Scotland 0: Strachan´s men succumb to Tbilisi hoodoo|
|Hodgson prepared to blood new players|
|Porto invite Euro elite to help raise millions for migrants|
|Dortmund legend Dede backs Tuchel to succeed|
|Robben out for four weeks|
|Turkey v Netherlands: Terim expecting hostile atmosphere for crunch clash|
|Portugal 0-1 France: Valbuena strikes late to sink Ronaldo & Co|
|Wales v Israel: Euro 2016 beckons for Coleman´s history boys|
|Gala: No extra payment for Grosskreutz|
|Increase Bundesliga´s TV rights or be left behind - Rummenigge|
|Kane: I´m no flash in the pan|
|Perez: United showed inexperience in De Gea saga|
|Milligan: Socceroos wary of Tajikistan|
|Conte wants more players like Pelle|
|OFC World Cup Qualifying Review: Samoa to meet Tahiti in next round|
|Krychowiak stayed at Sevilla because of Emery|
|I never considered Bayern exit - Gotze|
|Balotelli ´not in good condition´, Milan must improve - Mihajlovic|
|Robben slams ´stupid´ Martins Indi|
|Robben laments injury blow|
|Euro 2016 Qualifiers Review: Bale edges Wales closer, Iceland dent Netherlands´ qualification hopes|
|De Bruyne relieved to ´boss´ Bosnia-Herzegovina|
|Blind furious after nightmare debut|
|Coleman sees shades of Charles in Bale winner|
|Conte only concerned about Italy winning|
|Mauritania v South Africa: SAFA to investigate Masilela no-show|
|AFC World Cup Qualifying Review: Qatar hit 15 in Bhutan rout|
|Belgium 3 Bosnia-Herzegovina 1: De Bruyne shines in straightforward victory|
|Cyprus 0 Wales 1: Bale winner takes Wales one step closer|
|Netherlands 0 Iceland 1: Sigurdsson winner caps difficult first game for Blind|
|Italy 1 Malta 0: Pelle spares wasteful Azzurri|
|Balotelli stars in Milan friendly win|
|Bhutan thrashed 15-0 by Qatar in qualifier|
|Rwanda v Ghana: Gyan doubt gives hosts hope|
|Tanzania v Nigeria: Enyeama out of AFCON qualifier|
|Valdes and Berahino included in Premier League squads|
|Costa Rica v Brazil: Dunga´s men return after Copa disappointment|
|Spain v Slovakia: Azpilicueta eyeing important revenge|
|Adebayor left out of Tottenham squad list for league and Europe|
|San Marino v England: Place in history books beckons for Rooney|
|Germany can cope with Reus absence - Low|
|Bayern offer aid to refugees in ´training camp´|
|BREAKING NEWS: Welbeck ruled out for months after knee surgery|
|South Korea 8 Laos 0: Son leads the way in rout|
|Australia 5 Bangladesh 0: Socceroos surge to emphatic win|
|Japan 3 Cambodia 0: Hosts pick up first qualifying win|
|Rudiger aiming to nail down Euros spot after Roma move|
|Melo happy to join Inter at last|
|Hernandez thanks Ferguson after United departure|
|Chung: AFC has compromised FIFA election|
|Wales the new best of British|
|Reus out of Germany qualifiers|
|Chile v Paraguay: Vidal missing for Copa champions|
|Ghedin: Anything is possible for Malta|
|Pogba will be worth €100m - Marotta|
|England can win Euro 2016 - Hodgson tells players|
|Conte unsure over Balotelli future|
|Argentina - Bolivia Preview: Mascherano backs 'very special' Messi|
|Portugal - France Preview: Deschamps aiming to correct mistakes|