By Nick Teale
 
William Gallas could miss the rest of the season, according to Arsène Wenger.
 
The defender had been out of action with a calf problem since the 1-0 win over Liverpool on February 10 but returned to the Gunners' starting XI against Barcelona on Wednesday.
 
However, he was forced off in the first half with a recurrence of the injury and Wenger accepts that it was a mistake to play him.

"Gallas is longer than three weeks," said Wenger. "I would say five weeks.

"It was a gamble which did not pay off and was a mistake, yes.

"He could be back maybe quicker but I just give myself five weeks because three weeks is a minimum and we will have to be a bit more cautious with him.

"So when we go to the Champions League Final, he still has a chance to play," he added with a smile.
 
When Gallas was forced off against Barcelona he was replaced by Denilson, with Alex Song dropping to centre back. Sol Campbell stayed on the bench and, at his pre-match press conference on Friday, Wenger explained why he did not opt to introduce the Englishman.
 
"Of course I could have done that," he admitted. "But at that stage we were struggling a bit everywhere, in midfield, at the back.

"It was very difficult. I think Song has all the attributes to play centre back and was a bit concerned about Sol's muscular problems."

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 2 Apr 2010