In Monday’s 2 p.m. press conference, head coach Mike Zimmer addressed the media and announced that center John Sullivan underwent another surgery and is “unlikely” to return during the 2015 season.
In other words I wouldn’t count on seeing John Sullivan play again this season
— Chris Tomasson (@christomasson) October 26, 2015
In early September, the Vikings placed Sullivan on Injured Reserve after he underwent back surgery; the team announced he was designated to return but would likely miss at least eight weeks. Sullivan hadn’t practiced since mid August due to back spasms, and it now seems the problems will be more long term than originally thought.