By Richard Clarke in Germany

Arsène Wenger has revealed more details on the injury that forced Theo Walcott to make an early exit from Arsenal’s Training Camp near Bonn.

The striker sat out the session on Monday afternoon and was on a plane back home the following day. The manager did not suggest it was a serious problem but the injury clearly requires attention before the start of the campaign.

“Theo went home early and was due to have an MRI on Tuesday,” said Wenger. “It is an ankle injury that comes and goes.

“We need some more investigation because sometimes he’s completely free of it and sometimes it affects him. But we had to send him back because he couldn’t practice anymore.”

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 27 Jul 2011