I think he slows us down and often plays for himself. I have never doubted his technical ability despite what some think. He is very good in tight situations.
But he likes to sit on the centre half’s toes and drop too deep. He plays a few short passes ( getting his stats up) and then looks for the glory pass after the opposition defence is set.
This rarely comes off yet it’s our forward players who get the blame.
We can move the ball quicker without him and often see our players frustrated when he demands the ball from them when they are about to move it forward quickly. On here that is interpreted as nobody else dare take responsibility.
He is poor defensively, not very disciplined but quick to berate others when he lets his man run without tracking him.
He does indeed need to be relieved from set piece duty but again his creative stats would take a big dip.