I always thought he played alright but I didn't watch spurs much last season.
He's been awful, a few moments of brilliance but he generally strolls through games. Spurs record signing and the guy can't handle the intensity of the PL. Poor effort, poor fitness, yes he's talented with the ball but his attitude is a terrible.
Part of the reason Spurs have fallen away is they spent 110 million on him and Lo Celso and neither have delivered so far. Spurs just can't afford to have such expensive flops. They were supposed to be a new look midfield and it hasn't happened yet.