Jamie Carragher is confident Jose Mourinho will be successful at Manchester United.

The 53-year-old is set to become the new manager at Old Trafford with reports from Sky Sports suggesting that he has put pen to a three-year deal.

Regarding the impending appointment of the former Chelsea manager, Liverpool great Carragher feels the Red Devils have pulled off a brilliant piece of business in luring the Portuguese to the Theatre of Dreams.

"He'll have the same impact he's had with every team. It was a bit different at Chelsea with the way he finished there but that will make him doubly determined to make that right and that bodes well for United," Carragher said on Sky Sports News HQ.

"Next season, you'd expect them to be challenging for honours. You can't win something every season - even Mourinho doesn't do that. The disappointing thing for United is that since Sir Alex Ferguson left they haven't really competed for top honours but they certainly will do next season.

"If you look of his time at Chelsea, he said it would take them 12 months and that he should be judged in the second season. It will be similar at United. They've got a chance of winning the league in his first season but they would have to bring in the right players in the summer.

"There's no doubt that in 12 months he'll be turning that squad into title challengers and after a year then maybe even title winners. The next season they could still win of course - you can't put that past Jose Mourinho."

Carragher added: "The most important thing is for United is to start competing for trophies and there's no one better on the market for doing that than Jose Mourinho."