Manchester United goalkeeping legend Peter Schmeichel claims Ben Foster has limited time to push his claims for a regular first-team place.
Edwin van der Sar is set to overcome the thumb injury that has sidelined him since pre-season within a month and Foster has been criticised after an unconvincing display during United's 4-3 victory against Manchester City on Sunday.
United manager Sir Alex Ferguson has given Foster the nod ahead of Polish stopper Tomasz Kuszczak so far this season, but Old Trafford legend Schmeichel, who won every major honour bar the Uefa Cup during his eight-year stint at United in the 1990s, believes that Ferguson will recall Van der Sar as soon as the 38-year-old returns to full fitness.
Speaking to United Review, Schmeichel said: "Ben Foster has done well this season and he certainly looks to be a very good goalkeeper. He's getting a run of games now, but I'm sure Edwin will be back in when he's fit because the manager knows he's the right guy for the team at the moment.
"I think Edwin can keep playing for a few more years yet. He's fit, he's strong and he's motivated. I think he wants more silverware and, when you want more, you can go on. I was offered another year before I retired at 40 and, physically, I was pretty sure I could have done it, but I just didn't want to.
"Physically, it shouldn't be a problem for Edwin to carry on and if he wants to, then I'm sure he'll take that opportunity."
United have been linked with Schalke goalkeeper Manuel Neuer and CSKA Moscow's Igor Akinfeev already this season as potential replacements for Van der Sar.