By Richard Clarke

Arsène Wenger believes Abou Diaby can still become a “powerhouse” if he can overcome his Old Trafford error.

The Arsenal midfielder nodded past his own keeper in the 64th minute on Saturday to give Manchester United an unlikely three points.

The mistake was at odds with the dominant displays the 23-year-old has been putting in this season. His manager says Diaby can continue his ascent if he responds to Saturday’s disappointment in the right way.

“If he stays injury free, he can be an athlete and powerhouse,” said Wenger. “We just have to touch wood and see in the next three weeks if he can get through the games.”

Copyright 2014 The Arsenal Football Club plc. Permission to use quotations from this article is granted subject to appropriate credit being given to www.arsenal.com as the source 31 Aug 2009