Unfortunately for the Jets, besides the quarterback controversy, they lost their best defensive player (Revis) and offensive playmaker (Holmes).
Sanchez has played some good football in past years, including the playoffs. He has a big contract that will have to be paid by the Jets. If I was the owner of the Jets, I would fire the coach and GM and get somebody who knows how to manage quarterbacks. Jon Gruden is one name that comes to mind.
I would keep Mark Sanchez and get rid of Tim Tebow. That experiment was a big negative. Sanchez needs more weapons. Get a top receiver via free agency and also another running back.