Liverpool legend Robbie Fowler has questioned the value of Zlatan Ibrahimovic to Manchester United.

Fowler is convinced the Swede's powers are fast deteriorating.

"Ibra is still a good player, do not misunderstand me, but it is obvious that he is not as good as before. And it is quite natural," Fowler wrote for the Daily Mirror.

"It happens to you when you get older. You become less dynamic, more blunt than pointed.

"I also think he is falling too deep into the track to fit into United's style of play. He did not work hard enough for it."