I see one big fish, kind of obvious - Freddie Freeman
Don't see very many other position player options right now. Toronto has most positions covered with league average or better players so efficient upgrades are not easy to find. Would probably have to be a 1B/DH type to replace Smoak.
Danny Valencia?
Does Teixeria even project better than Smoak at this point? He'd be free I guess. Yankees would probably pay his whole contract for a C prospect.
Steve Pearce is a good one. Get Steve Pearce.
Carlos Beltran is a good one.
Toronto could look for a rotation upgrade, especially if Sanchez has to transition to the pen later on. Rich Hill is obvious and has been mentioned. Hill might be the only rental SP who would be an obvious talent upgrade on someone in the playoff rotation.
Relievers - I actually don't see very many rental veterans. David Hernandez? Brad Ziegler.
There's Chapman, but f*** paying the Yankees for him.
Tyler Clippard - owed 4M in 2017.
I see a lot of guys with a few years of control though. Trevor May, Hector Neris, Cam Bedrosian, Michael Tonkin, Alex Colome, Tyler Thornburg, Jeremy Jeffress, Ian Krol, numerous others....
Need more teams to tumble out of the wild card pictures.