Of course he'll be replaced, but I don't think it'll happen as soon as everyone else. This is completely based on Schneiderlin being expensive as fuck though. If he's under 20 they'll definitely go after him.
Mate, I honestly can't see Poch allowing his current reputation to be tarnished by fucking around till January waiting for players to be replaced. That's just not going to happen. He's the manager, let him manage. Levy will back him.