Who should I drop (Wilson/Watson/Carr

I”m currently carrying 3 QB’s in a league where roster spots are at a premium (15 roster spots in a 12 team league). Should I drop Russell Wilson (returns from bye), Deshaun Watson (injured last few weeks before Arizona in Week 9), or Derek Carr to fill a roster spot (potential waiver pickup)? Should wait and see whether the injury bug catches one of these? The waiver wire this week is not great, but I also trying to predict/project late-season sleepers for the push to the playoffs.

Watson a bit over Wilson