The ex-Arsenal defender questioned his wisdom in flying to Doha for TV work, saying he thinks there is no way back for Ferdinand now.
Keown told the Daily Star Sunday: "I think he's probably already regretting his decision.
"He must be under a great deal of pressure from Sir Alex Ferguson with his contract situation.
"He hasn't retired from international football but I can't see a way back for him now. Certainly when he's flying across the world to do a TV programme you wonder is that really good for his back. "