A guy I would be very interested in is Chris Archer. I wonder if there's something the Sox see in him they could "fix". Archer is probably the closest thing to an 'ace', and it would require some luck and some work to him to rediscover that ability, that the Sox could get w/o sacrificing Anderson. Might not even have to give up Fulmer or Adams even. There's been some dip in velocity but nothing catastrophic and he still racks up the strikeouts, his struggles have been due to walks, HR and just giving up hard contact in general. The Sox have shown an adeptness to fixing that fault, hard hit balls, in pitchers.
Odorizzi wouldn't be bad either. I think the Rays are one of the few rosters to have a lot of interesting names, but also probably wont stay in the race much longer.