There's a problem with both managers in that you can see they want him in the #8, and for good reason, but his tank can't do a full game at adult intensity yet - a few of those box-to-box runs and he's gasping for air whilst visibly slowing at least until he gets a full breather.
Still feel that for now you want him deeper with his foot on the ball making the ball do more work than he does, but I guess another way of looking at it for now is trying to get the game done and dusted inside his timeframe before subbing him out around 65-70 for someone else to see out the game.
Definitely a gear or two to go just by him being adult fit instead of the current kid fit that he is.