West Ham boss David Moyes says Ralf Rangnick will know the Manchester United job is unlike anything he has experienced.

Despite his huge respect for Rangnick, Moyes has told the German that nothing compares to the intense worldwide scrutiny of managing United.

Moyes said: “Ralf Rangnick's reputation, what he's done in football, the teams he's built, his ideas, his philosophies over a long period have been great. He's someone in the coaching world you'd have always looked up to.

“Becoming the manager of Manchester United, though, is completely different to anything else.

“The level of scrutiny. And whatever your ideas might be, they might not work at that club. The players available to you… you might not be able to play the way you want to play.

“That's something that can take a bit of time. That's why, given time, you think you can do a better job.

“When you get the big jobs you get judged immediately. I'm disappointed that I couldn't do a better job there.

“But Manchester United have had some of the best managers in the world in recent years and it's a tough job.

“If you lose your job at Manchester United, it makes news throughout the world. I took over from Sir Alex which was a really difficult task.

“I was happy to take it but wish I could have done a bit better.

“At that time, though, I was probably as ready for the job as anybody was."