He's not a classic RT, in that he isn't a very powerful run blocker. He's not quite agile enough to handle the speed rushers, so really isn't a LT candidate. What he is best suited for is a backup position.
So, IMO, Stinch, under the best of circumstances probably would not garner much more than a 4th or 5th rounder.
Of course, this isn't even the best of circumstances. We signed him to a 2 year contract last year, so this is his contract year. So any trade for him is really only for one year.