Fergie predicts next Man Utd keeper will be in-house
The Dutch international, who turns 40 next year, is set to decide in the coming days whether he will continue at Old Trafford beyond next summer when his current contract expires, or give way to someone else.
The United boss said: "Edwin's not said anything yet about what he intends to do.
"He has come back from his recent injury well. It will be Christmas time or sometime in December when he will outline his plans and how long he will go on.
"We will await that.
"Ben has terrific ability and needs game experience. Tomasz is also another good keeper.
"At the end of the day the two of them will fight it out, I'm sure of that."
Either Foster or Kuszczak will feature in goal when the Red Devils take on Besiktas in the UEFA Champions League on Wednesday.