New England tight end Rob Gronkowski will have back surgery on a disk in mid-June.
A person familiar with the decision tells The Associated Press that Gronkowski will undergo the surgery next month, which means he will miss the rest of offseason training activities with the Patriots. He could return for training camp at the end of July.
The person spoke on condition of anonymity because the Patriots do not reveal injury details publicly.
Gronkowski missed the 2009 season at the University of Arizona after back surgery. Earlier this month, he underwent a fourth procedure on his left forearm, which he broke last season, to treat an infection.