Manchester United boss Sir Alex Ferguson is wary of a fully fit Mathieu Valbuena being available for the second-leg of their Champions League clash with Marseille.
Valbuena was a second-half substitute for last night's 0-0 draw.
"They will have [Mathieu] Valbuena back [for the second leg], one of their best players. We should have one or two players back ourselves but we can't take anything for granted and we won't be doing," said Ferguson.
United have been linked with a summer move for Valbuena.
