If you think about it, Galchenyuk for Sheary does make a lot of sense:
1. Sheary has a history of fitting well with Crosby, and it's very possible that Guentzel spends the year with Malkin after how good they've looked together.
2. Galchenyuk for Sheary fits the mold of past reclamation project type trades JR has done
3. JR loves re-acquiring players that played for him in the past, especially ones on past cup winners (Cullen and Hainsey are 2 recent examples)
4. I believe JR also liked Sheary as a player and only moved him in the first place due to a cap crunch
Can Sully handle putting Chucky with Malkin for a few games just so he can get some drive by points then sell him as he's 'heating up'
That's not going to change anything, I think everyone knows what Galchenyuk's deal is at this point.