Arsenal goalkeeper Wojciech Szczesny suffered a dislocated finger in the Champions League defeat to Barcelona.
Szczesny was hurt saving Dani Alves' 16th-minute free-kick and left the pitch a couple of minutes later after receiving treatment.
Manuel Almunia replaced him and went on to make some eye-catching saves, but manager Arsene Wenger will hope his first-choice keeper will be able to play some part in the Barclays Premier League run-in.
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