Manchester United have a £16m solution to give their newest signing what he needs

In the opinion of many, a flourishing wing-back department will be the key to Ruben Amorim's masterplan coming to fruition at Manchester United.

Following his appointment as the club's new head coach back in November, the Portuguese chief wasted no time at all in implementing his preferred 3-4-2-1 formation.

He had enjoyed no shortage of success using that system at Sporting Lisbon and United supporters felt the formation would be the start of something special. However, it soon became obvious that he did not have the right tools to make it work.

United made the signing of a left-sided wing-back their leading objective in the January transfer window and fulfilled their mission, signing Patrick Dorgu from Lecce for a fee worth £25million.

After making his debut from the right against Leicester City in the FA Cup a little over a fortnight ago, the Dane made his first appearance on the left against Tottenham Hotspur just over a week ago. He produced several eye-catching runs from deep, providing United with the width they both crave and need for the 3-4-2-1 system to work.

United have been starved of consistency on the left flank for more than a year, with Luke Shaw constantly injured and Diogo Dalot not a naturally left-sided player. Though Dorgu can also play on the right, the expectation is that he will become a left-sided player for United in the long-term.

Aged just 20, Dorgu has the capacity to make that position his own. He has the required skillset and the athletic attributes Amorim craves to become United's first-choice left wing-back for years to come.

However, United do not have a natural left wing-back beyond Dorgu in reserve. Dalot has demonstrated this season that he is not a suitable fit, meaning Dorgu needs