Which side do you want to be on?
Kerryon unless gronk decides to start playing better.
Kerryon. It could depend on your team, but if a TE is available that has been doing decent and you are in need of a RB then I would take him. Gronk still has a bye and if you are win needy then i would be even more inclined. On the other hand, if you don’t need a RB then having gronk instead of a kind of alright TE will be nice. If you have a winning record and dont absolutely need wins now then holding gronk is worth it.