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The Ivorian striker is a close ally of the Portuguese tactician, having spent many years working alongside him at Chelsea.

Mourinho brought Drogba to England and helped to transform him into a global superstar, with countless major honors shared between the two.

United is yet to see the spark which burned so brightly at Stamford Bridge, despite collecting a first trophy of the season in the form of the Community Shield.

Things have not gone entirely to plan since then, with inconsistency blighting the game of an expensively-assembled squad.

Mourinho did spend big over the summer, but only brought in four players.

The Red Devils ranks cannot be considered to have been shaped in his image, with there further tweaking required before that becomes the case.

That is a view shared by Drogba, who remains convinced that better days lie ahead for United as it adjusts to a third managerial regime since the departure of Sir Alex Ferguson.

He told RTL : “He’s not a has-been.

“I think that it’s a very big challenge for him. I think he has to take some time to build a team.”

United entered the international break perched sixth in the Premier League standings, some eight points behind table-topping Liverpool.

The Red Devils are also six adrift of the top four and Champions League qualification, and bridging that gap will be considered a priority when domestic action resumes with a home date against Arsenal on Nov.19.

Mourinho has never finished a full season outside of the top three during spells at Porto, Chelsea, Inter Milan and Real Madrid, so will be confident that he can return the Red Devils to European football’s top table before the 2016-17 campaign comes to a close.