For the first time since 1975, Norv Turner won’t be on an NFL or college staff when football season begins.

But that doesn't mean Turner's coaching career is finished.

Turner not only hasn’t shut the door on returning to the NFL in 2018. He also will remain close to the game this August as teams prepare for the regular season. The 65-year-old Turner said Tuesday night he plans on attending several NFL training camps and has accepted similar invitations from "four or five" colleges.

MORE: 2017 NFL coach rankings

"I’ve had a couple (coaches) reach out to me and ask if I could come in for two or three days to just visit and maybe help a little bit or give some opinions," Turner told co-host Bill Polian and me on SiriusXM NFL Radio. "I'm open to continue coaching in the future. A lot of that would depend on the opportunity."

Turner's last NFL stint ended abruptly when he resigned as Minnesota’s offensive coordinator seven games into the 2016 season. The Vikings were 5-2 at the time but coming off two straight losses with an offense decimated by injuries that had started to sputter. The decline had let to friction between Turner and head coach Mike Zimmer, and the former wanted no part of it.

Turner still remains friends with members of the organization and a supporter of the Vikings players he coached. Among them is quarterback Teddy Bridgewater, who is trying to return from a major knee injury suffered during a 2016 preseason practice.

Bridgewater's steady improvement over his first two NFL seasons came under the watch of Turner and his son Scott, who was Minnesota’s quarterbacks coach before being fired last January as first reported by Sporting News.

"The big thing for Teddy is he was lucky playing (collegiately) at Louisville," Turner said. "He was in a style of offense that is somewhat similar to what NFL teams do. Teddy is ahead of the curve in terms of learning, understanding and applying. I think there’s a difference between learning and applying it on the field.

"We were able to speed up how Teddy progressed because he had to go against that defense every day in practice. With coach Zimmer, you get a lot of different looks. (Bridgewater) found out right away that he had to put the time in and this is a full-time commitment."

MORE: Breaking down new-look Vikings

The same can be said of coaching, which Turner quickly realized after his first foray into the profession as a graduate assistant at the University of Oregon in 1975. Ten years later, Turner became Los Angeles Rams wide receivers coach and has been on an NFL staff every season since, until now. That stretch included head coaching stints with Washington (1994-2000), Oakland (2004-2005) and San Diego (2007-2012).

Turner shared some of his wisdom last weekend at an NFL coaches clinic in New Jersey designed for assistants with less than three years of experience. Turner’s focus was on quarterbacks.

"It’s obviously a unique position," said Turner, who has coached such greats as Troy Aikman, Drew Brees and Philip Rivers. “There aren’t that many guys who have the physical skills to play the position. On top of that, so much more goes into it.

"My big priority is decision-making. Quarterbacks have to make great decisions over and over and over again. They have to understand the offense, process a whole lot of information, and handle the changes and adjustments on a week to week basis. As I told the guys (at the clinic), I think arm strength is way, way, way overrated. Accuracy and understanding how, when and where to throw the ball, those are big priorities."

MORE: Should rookie QBs start or sit?

One priority for Turner this fall will be watching the University of Michigan now that his son Scott was hired as an offensive analyst. Turner has already come away impressed with head coach Jim Harbaugh’s program after attending two practices and Michigan's spring game in April.

"People give Harbaugh a hard time (because) he's out there a little bit with the Twitter and some other things, but I was really impressed with their staff and the way they coach and practice," Turner said. "Jim is an old-school guy when it comes to football."

So is Turner, which is why spending a year away from the sideline will be an adjustment.

"I'm looking forward to football season as a fan or spectator," he said. "But there will always be that coaching part of it in me."

Alex Marvez can be heard from 7 p.m. to 11 p.m. ET Wednesday and Thursday on SiriusXM NFL Radio.