I understand some concern on the Gronk injury.  He could miss the start of the season.  But he's 24 and has 8+ years ahead of him.  They open him up, replace the plate, and it takes 10 weeks to heal.  Or, they open him up, find infection, remove it, wait a few weeks, replace the plate, and wait 10 more weeks --right?
I can understand moving within the tier - say, Gronk for Graham, Gronk for Martin, Gronk for Dez, moves like that.  But some really seem to be willing to take clearly lesser players for him, and I don't get that.