Confused by Mou's tactics

He had to know that Liverpool would control the ball and the center of the park and that his only chance would be to counter on long balls. His best long passer and maybe one of the best in the world in Pogba is firmly planted on the bench. I get he has been horrible for United but in a game of this class you play the best option strategy dictates.

Soccer is strange and anything can happen but I can't see how Mou survives getting blasted in Champions and finishing out of the top 4 given how much the board has spent for him.