By Declan Taylor

Arsène Wenger still does not know when Tomas Rosicky will be back in action.

A number of complications with an injury sustained against Newcastle in January kept the Czech midfielder out of the second half of last season, the European Championships and the start of 2008/09.

When he is back in contention, the 28-year-old will add vital experience to a very youthful midfield, but his manager admits that there is still no solid return date.

"I believe that all the checks we made are reassuring, but it's difficult to say,” said the Frenchman. “It's an inflammation that's going on in his leg that has to settle, to calm down."

“We are a little bit speechless on that at the moment because we feel it is all going well. It is a problem of re-coordinating his muscle with the exercises he does.

"There's nothing really that harms his future, but, as well nobody can tell me on the 10th of December he will play.

“He can be on the 31st of December, he can be on the 10th of November, nobody knows with him. In the next two months he should be back but what date, nobody knows.”

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 26 Sep 2008