London - Arsenal manager Arsene Wenger said he expects to be without William Gallas and Mikael Silvestre for up to three weeks because of injury.

Gallas has a hamstring injury, while Silvestre suffered a thigh injury in the FA Cup win over Plymouth last weekend.

Wenger said Denilson and Toure would return for the visit of Bolton on Saturday.

"Kolo and Denilson will be back available," Wenger said. "However unfortunately we have lost William Gallas with a hamstring problem.

"We lost Silvestre too with a thigh problem last week as well. So we have lost two players from the game on Saturday but we have gained two back.

"I think Gallas and Silvestre will be out for three weeks." (dpa)