I'm going to guess at what happened here.
remember at the start of 2021-22 under FSW he was doing well, to be fair. FSW had given him the remit to get forward and he was doing well. At one point he had the most ground covered in the entire PL.
Then he got hurt.
Then he came back and Frank used him a lot in a double pivot with Allan, I guess out of necessity, or whatever. Since we were/are crap defensively, and Allan was old, he had an impossible and unsatisfying (to him) job. He ran himself into the ground.
So he started to sulk.
Not to excuse him. I agree he's a problem child now and he needs jettisoning. But if I were to look at it from his perspective this is maybe it.