For me he's the biggest wasted potential of at least the last 10 years.
When he was right he was as good as any mid fielder. Problem was he only ever seemed to be right once a quarter.
He can't tune out the outside world, he got in trouble and has a chip on his shoulder now.
There's been times where his personal life obviously affected his form because he can't escape in to football for a few hours.
Pogba, Lingard, and Martial...