Stark appears to see Buchholz as a prime candidate for a July trade:
Regardless, Buchholz is a short-termer. He's on a one-year contract (FA again in 2018). If he's more than just a guy who can be acquired for little (I've rooted for Tobias, but he's a marginal prospect), he's just a one-year patch - and I'm not convinced that he makes much sense as a one-year patch.
Even with a trade (unless it involves multiple pitching prospects), the Phils have the young pitchers to build a rotation:
Asher
Eflin
Eickhoff
Hellickson
Morgan
Nola
Thompson
Velasquez
...and that's without pushing Lively, or anybody else who doesn't already have major-league experience. So if this is about anything other than just "buy low, sell high," it implies multiple guys on that list not being available (injury, trade, whatever).