He's certainly talented enough to play in the NFL. I don't think that workout proved much other than he isn't too out of shape and can still throw a football forward.
In my opinion, his best option is to go to a Seattle or Baltimore type as a no doubt backup and be a very good insurance policy for a playoff team. If it works out, he could net them a good comp pick if he leaves next year.
There are a lot of teams where he isn't worth the attention that comes along with him. Teams where he could legitimately start at QB this year probably aren't interested in winning anyway. I wouldn't want the Jets to sign him. We have our QB, we have the NY media and don't need more drama. It shouldn't be that way, but it's reality.
I didn't realize he was already 32. Don't know why I thought he was still 28 or so. Probably doesn't matter much.