Wenger calls for maturity after Dortmund defeat

Arsenal manager Arsene Wenger believes the Barclays Premier League leaders will need to be more streetwise if they are to progress in Europe after a late goal from Robert Lewandowski condemned his side to a 2-1 Champions League defeat by Borussia Dortmund.

Henrikh Mkhitaryan had put the well-drilled Germans ahead in the 16th minute of the Group F clash at the Emirates Stadium after Gunners midfielder Aaron Ramsey gave away possession on the edge of his own penalty area.