They could deal Estarda at the deadline and resign him in the offseason. Same could be said for Liriano. It's unusual to have starters who really want to be in Toronto, may as well take advantage while you can. If Martin stays hot it wouldn't be hard to him either, but I'm not a fan of that at all.
Edit: just realized how disappointed I'd be to see Estrada go. I love watching the guy do his thing.