There's going to be a lot of irony whenever he leaves. He's probably been the most disliked player at United in recent seasons (except for maybe Di Maria?) yet he's had important moments that have helped us to win what trophies we've managed post-SAF...I respect him for making something out of what looked like a hopeless situation when Moysey first signed him. But you can see in games like against Barcelona this week that we need to look elsewhere for serious league and CL contention.
Having said that, we had better make sure that we've got the replacements for our MF before we cut any more veteran players out. I don't think we can realistically compete for anything with a MF that will see TFM, Pereira, or Tuanzebe getting minutes in the most important games, which we might well see if our injury history keeps up.