Like Henry, Tannehill's contract is set to expire in March.

"I thought he did a great job for what they asked him to do this year," Moon said of Tannehill. "Sometimes when your team is off to a bad start – and I have gone through that before – they want to infuse some energy into the team and make a change and it worked for him. Ryan had his struggles in Miami, and sometimes you need a new environment to restart you career. My biggest concern is if Derrick Henry doesn't sign back there, then is Ryan Tannehill the quarterback you think can carry your football team to that same place in the playoffs or even further? I don't know if he's a guy who can carry a team with his arm, so there has to be a lot of things in place for him to be successful. But he is in the right situation for him right now if Derrick Henry is back and they are committed to running the football like they have been."

Retaining Henry, who led the NFL with 1,540 rushing yards in 2019, is the key to the team's success, Moon said.

"I've always loved Derrick, since he was at Alabama," Moon said. "It has taken him a little while to really find his footing, and they didn't figure out a way to use him the way they should have earlier in his career. But they have figured that out now, Mike Vrabel and his staff, and they have some really good wide receivers on the outside to build off of. It is a really good offensive unit – they are efficient, they don't make a lot of mistakes, their offensive line is physical, and this type of team, if they add a couple of pieces on their defensive side of the football, they can be really good again.

"… My thinking is as long as they don't have to break the bank to keep Ryan Tannehill. ... You know you are going to have to pay Derrick Henry top dollar, but the top dollar for a running back isn't anywhere near what it is for a quarterback. So if Ryan is willing to take a good contract but not up there with what the market is right now, about $30 million or whatever, they will have money to even add some more pieces that could get them over the top."

Moon, who became friendly with Mariota while he was still in college at Oregon after meeting at the Davey O'Brien Awards, said he's pulling for the former Titans starter.

After being replaced by Tannehill, Mariota didn't play in nine straight games. Down the stretch he played a handful of snaps in games.

"I think sometimes quarterbacks just need a change of scenery if things aren't going well in one place, and that may end up being the case with Marcus," Moon said. "A lot of pressure was put in his shoulders come out as the No.2 pick, same thing with Jameis Winston in Tampa Bay. They just haven't been able to live up to the pressure they had to play with, having been asked to play Day One. Neither one of them was put in a situation where they had a veteran behind them and somebody they could learn from, kind of like Patrick Mahomes, where he had Alex Smith for a year, or Aaron Rodgers, where he had Brett Favre. I can go on and on with guys who had players who had mentors before they were put on the spot.