Owen Hargreaves has lauded Ralf Rangnick ahead of his appointment as Manchester United interim manager and has praised his role in inspiring the next generation of coaches in Germany.

Liverpool manager Jurgen Klopp is a huge admirer of the United -bound boss, while Thomas Tuchel is said to have implemented aspects of the 63-year-old's philosophy, which he has reaped rewards of with PSG and Chelsea.

In taking over at Old Trafford, Rangnick will end three years away from the managerial hot seat, with his last game in charge of Leipzig coming in a DFB Pokal final defeat to Bayern Munich — before he took on sporting director roles at Red Bull, then moving to Lokomotiv Moscow.

The German could be in his post at United in time for the clash with Arsenal, although he will miss the visit to Chelsea due to work permit issues.

Rangnick has agreed a six-month deal to manage United until the end of May, before moving into in a consultancy role at the club for an initial two-year period

And former Bayern Munich and United man Hargreaves has heaped praise on Rangnick and claims that the "sky is the limit" for the former RB Leipzig coach.

"Every job he touched he improved significantly," he told Metro.

"The first time it was Ulm, a tiny little team and they came out of nowhere. You think about Hoffenheim and you think about the Red Bull projects, Leipzig and Salzburg.

"He is an innovator and he’s a football man and that’s a beautiful thing.

"They beat one of Jurgen Klopp’s teams 4-1 and after Jurgen Klopp said he wanted his teams to play like that. How big a compliment do you want to make somebody?

"Credit to him for inspiring that generation and maybe they’ve taken on his teachings and tweaked it a little bit to their style. But to get a compliment from Tuchel and Klopp, you couldn’t get any bigger ones

"I can’t think of one job he’s done where he hasn’t overachieved.

"The whole trophy thing, I’m not too worried about that because he’s never had a group of players like this.

"For his body of work and all the years he’s had in football, this is a gift to him. He’s probably not 100 per cent sure either, but it’s an exciting opportunity to take that group with his experience.

"I think the sky is the limit, but he’s going to have to get in there and see, 'When can I push and when can I back off and when do I have to bring the older guys on board – the [Raphael] Varanes and [Cristiano] Ronaldos – and get their opinion?' — because I think it’s going to be delicate the first few weeks."

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