True dat, but midfield is where suspensions and injuries hit the most, and if you can just imagine an injury or two among those players you listed when Asabob and Lemina leaves for African Nations Cup, then well...
I do see your point, though, I'm just of the opinion that one of them should stay. And to be perfectly honest with you I hope it's Hernanes, who stays. Dude never expects to play, he's a professional who just keeps his mouth shut and trains, and I think he's a nice backup of backups to have in case crisis hits.