By Jacob Leeks Former Liverpool star Danny Murphy has insisted he remains doubtful that Rasmus Hojlund will ever live up to his £72million price tag. The Dane arrived last summer to lead the line for Manchester United, but has scored just eight Premier League goals this season. In fact, the 21-year-old has hit the back of the net just once since mid-February, in what has been a disappointing debut campaign. Hojlund’s struggles have been a symptom of wider problems at Old Trafford, with United enduring a miserable second year under Erik ten Hag’s management. Many of the Dutchman’s problems stem…