While Todd Bowles will return in 2017, many of his assistant coaches will not.

Bowles is preparing to make major changes to his coaching staff, according to league sources. Those changes could include offensive coordinator Chan Gailey, who many inside the Jets believe won’t be retained.

Bowles would not say if he plans on making changes.

“I’ll discuss all that as we get forward into our process next week,” Bowles said.

He repeated that answer when asked specifically about Gailey.

The Jets have had a tough year on all fronts, so any coaching changes Bowles makes are hard to argue. Gailey has been undone by the play of his quarterbacks, who combined for 25 interceptions this season. The 64-year-old oversaw a strong Jets offense in 2015, but things fell apart this year.

The Jets have not had an offensive coordinator last longer than two years since Brian Schottenheimer held the post from 2006-11.

Gailey said this week that this has been his toughest season as a coordinator.

“I wish I could put my finger on it,” Gailey said. “That would be a simple and easy discussion for the offseason to decide what to do. That would be easy. I think it’s a myriad of things that happened at different times that created problems for us. I don’t think there’s one simple, easy, ‘OK, let’s do this’ and everything’s back to the way it was last year. I don’t think we can say that.”

When Gailey spoke to the media on Thursday, he sounded like a man who knew he would not be back with the team next year.

“I always have loved to coach,” Gailey said. “I’ve always loved to do that. I think it’s in my blood. I think it’ll be there until I go to the grave.”