I don't know why either NY teams would be going out for Fuentes right now when they both seem to have a set CL and SU pitcher. As for them going to Buccholz, I guess I could see it happening because he's been pitching some nice baseball this season but they'd probably give Corpas one more go before resorting to that option. Corpas was pretty much untouchable last year and completely turned around this season and has yet to get his ERA under 6
Buccholz would be a nice closer in a time where it seems a bunch of CL are getting injured and the SP eligibility adds a nice touch to it but I can't really see it happening anytime soon.