According to NFL Networks Ian Rapoport, Jay Cutler and the Miami Dolphins have agreed to deal that will have Cutler replace the starter Ryan Tannehill. This would reunite Cutler and HC Adam Gase, who was previously the Bears OC in the 2015 season. Cutler originally retired and was on pace to join Fox as a live TV announcer, but with Tannehill possibly needing season-ending surgery, and not feeling that Matt Moore was a good second option, the Dolphins felt they did not have much of an option but to go out and sign Cutler for the season. The deal is reportedly a 1-year/$10M deal, plus incentives (Adam Schefter). I feel this a bit much for a QB that hasn't played too well over the last few years, and is coming off a shoulder injury in his throwing arm just last season.
Tannehill injured his left ACL while attempting to scramble in a training camp practice Thursday (Miami Herald). in 2016, he led the team to a 6th seed Wild Card birth, which they eventually would lose to the AFC runner-up Pittsburg Steelers. With weapons like Jarvis Landry, Kenny Stills, Jay Ajayi, and DeVante Parker, they were looking for a big push this year with their first playoff birth since 2008. They were looking to try and battle for the AFC East crown, but with the injury to their QB, they might have to wait yet another year, unless Cutler can come in and have a good season.
This move doesn't really make the Dolphins much better, or better at all. Cutler has a TD-INT ratio of only 1.42, which isn't terrible, but it isn't something you want to build around. He's only made the Pro Bowl one time in his 11 year career (2008), and has not produced to the level that has been expected of him. With Cutler, you lose the mobility that Tannehill brought, but he has a stronger arm, but lacks the accuracy to make it efficient. Signing Colin Kaepernick would have been another good option, but with all the drama surrounding him, signing Cutler was a safe move for the Dolphins.