"Arsenal" defender falls out of formation again © EuroFootball.com

Just returned to the field after a calf injury, Abou Diaby has again dropped out of the lineup. This time the London midfielder is having trouble with his ankle.

The 27-year-old footballer appeared on the field in Monday's match against London's Chelsea after a nine-week break, but on Wednesday in the match against Wigan he had to be substituted.

It is not yet clear how long Diaby will be unable to play, but coach Arsene Wenger predicts that the treatment will take a few weeks.

Diaby arrived in London in 2006 from Auxerre for nearly 3 million euros.