Hummels, right, would find himself without European football next season were he to stay at Dortmund

Manchester United are preparing to make a bid in excess of £25 million for Mats Hummels, with the Borussia Dortmund captain expected to follow Jürgen Klopp by leaving the German club at the end of the season.

United are also optimistic about their prospects of signing Memphis Depay, the PSV Eindhoven and Holland forward, and Nathaniel Clyne, the Southampton and England right back, as the club prepare for another makeover this summer. The trio are likely to cost a combined fee of up to £70 million.

A total of 21 players who were in or around Sir Alex Ferguson’s first-team squad have left Old Trafford since the Scot’s retirement almost two years ago and the figure is expected to hit the 30 mark by the