The former NFL star admitted the shocking news in a recent interview with Reena Ninan of CBS News. . I had nine surgeries and probably had, like, 20 concussions in my life – no lie. I remember five blackout ones. , Rob Gronkowski, via CBS News. The subject came up after Ninan asked Gronkowski if he would let his son play football. . I would let my son play football, but first I'd educate him on the game. (I would) educate him on what I went through, and I truly believe that any injury you receive is fixable. , Rob Gronkowski, via CBS News. The former New England Patriots tight end retired this offseason. . Gronkowski spent his entire nine-year career with the Patriots, including three Super Bowl titles. . Many have speculated that Gronkowski may return to New England later this season. . Gronkowski said that he's "in a good place right now" and "would have to be feeling it" to consider a return.