Manchester United have registered an interest in Monaco's adventurous full back Djibril Sidibe, according to French outlet Le 10 Sport as they embark on a defensive overhaul.

The Frenchman can play on either flank and that could well by bad news for Ashley Young and Antonio Valencia, both experienced wingers turned full backs, as they are pushed down the pecking order by a young, vibrant full back.

What's the story, then?

The report states that Jose Mourinho has made the first move in pursuit of Sidibe, valued at £20.7m by Transfermarkt, with a view to a summer move.

Monaco were plundered after reaching the Champions League semi-finals last season, with big name players including Bernardo Silva and Kylian Mbappe departing and are reportedly braced for a similar raid this time around.

The report claims that Thomas Lemar and Fabinho have one foot out of the door and Sidibe could be the next man to leave the principality club.

Bad news for Valencia and Young?

The experienced duo have actually been among United's better performers this season but it is clear that they will need replacing sooner rather than later.

Valencia has been the on-pitch captain for much of the season but Sidibe's strongest position is right-back. He can get up and down the right as well as anyone in Europe, which could spell trouble for the former Wigan man.

Sidibe is comfortable on the left, where Young has been operating, and the former Watford man has always felt like a stopgap. If Mourinho doesn't want to drop his captain, then it is the England man who will be in the firing line.

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