I have been offered Gronkowski for Alfred Morris
Morris is my flex, if I trade him I would have to use Doug Martin or Denarius Moore (I also have Amendola on the DL for potential late season usage).
My current TE's are Witten and Heath Miller. You can only start 1 TE and there are not TE playable flex spots.
Obviously the Gronk is an upgrade, but I am clearly downgrading the flex spot. Is Gronk enough of an upgrade at TE to downgrade my flex from Morris to Martin or Moore?