They overpaid Tannehill but I can't say I blame them. They're paying him for the player they expect him to become and not the player he is right now. Right now he's a decent QB. Definitely not elite. BUT, he's slowly improved each of his seasons in the NFL so far. Since they're a division rival my biggest hope is that now that he has his big contract he'll either keep playing like he's been playing or even better regress in 2015. It wouldn't be crazy if that's what happened either. He seems like a smart kid but it's very rare for a rookie to come in and then have 4 straight years of incremental progression. I could see him taking a step backward this year, especially having to play the Bills Dline twice, the Jets dline twice, and the Texans this year. JJ Watt is an absolute freak of nature and adding Clowney to that mix is going to be a nightmare for opposing QBs.
I'm more wondering what the hell the Dolphins' plan is going forward. They've approached this offseason like a team that feels like they have to go all-in and win a Superbowl NOW(kind of like The Pats signing Revis last offseason, the Saints spending big for Jarius Byrd, etc.) but they don't have an aging QB like those two teams do so I'm not sure what their plan is. What kind of team can you field over the next couple years when you have this much tied up in a young, still-barely-above-average QB, and a Defensive Tackle? That's more than a quarter of their ENTIRE 2016 salary cap!
Combined cap hits for Ndamukong Suh & Ryan Tannehill:
2015: $10.873M
2016: $40.24M