He'd be a great addition. He turns 30 this year, and if I were him I'd be looking for at least a 4-year contract. That is of course unless a club offers a big jump in salary for 3 years, but that club ain't us.
Difference between him Coutinho, Dembele and Griezmann is that he has a clear position and has been consistent for years, one of the world's best players.
If we manage to sell Coutinho or Griezmann for 40m it's not a bad 'swap'.
Experienced and humble star player. Scores, assists, works hard. Prime years too.