Aaron Hernandez was a run blocker on 406 plays last season for the Patriots. That's four hundred and six.
Finley is an improving blocker year on year.
Look at the top 12/15 TE's in the NFL. Beyond Aaron Hernandez who stayed in to block or run blocked 40% of the time he was on the field, there's not a move TE in the top 12/15. Seems a monumental waste of a pick for a team that needs WR's and TE's to waste a pick on a tweener. All well and good if it's Hernadez, a top 45 talent without the off field issues, but he's not.