Arsenal boss Arsene Wenger has urged his side to respond to their 4-0 beating in Milan, starting this weekend.
The Gunners were unable to match the Italian outfit in midweek, but the Frenchman insists that the club cannot afford to allow the defeat to have a negative effect on the remainder of their season.
"We lost against a good AC Milan team, not an exceptional one. We were punished," he said. "For us, for the rest of the season, it is important not to dwell on that too much.
"We must focus on the next performance. We have to ensure that we are capable to respond, that is where the real test is.
"We cannot change what has happened, but we have an influence on the rest of the season."
Meanwhile, Arsenal travel to the Stadium of Light to face Sunderland in the FA Cup fifth round this afternoon.