Yimi got demoted (which is odd given his 2.85 xFIP and a team that's saber friendly), Liberatore has given up 10 runs in his last 12 innings, and is starting to have command issues, Nicasio has his own command issues, and it's questionable if he's actually any good. Howell is okay, but very lucky so far this year. Peralta has been a disaster. IMO if the Phillies are interested in Hamels, and Puig is going the other way, then those two guys make the most sense to be included. The Phillies aren't going to want to part with extra prospects when dealing Hamels.