May not be a bad thing. Currently they think he is good. As he is out for weeks they won’t find out he isn’t. A few decent performances once back and they might be dumb enough to buy him off us.
In fairness, in the matches I’ve seen him play for United, he was very good. Sometimes a player is much better for a certain type of manager and system than another one. He could be of no value to us, but lots of value to United.