1 Mats Hummels

Manchester United are keeping a close eye on Mats Hummels’ situation at Borussia Dortmund, according to reports in Germany.

The German international was heavily linked with a move to Old Trafford in the summer but opted to commit his future to Dortmund.

However, according to Bild, Hummels has struggled to adapt to life under new coach Thomas Tuchel and is set to hand in a transfer request at the end of the season.

That is likely to alert United, with Louis van Gaal known to be an admirer of the 26-year-old and eyeing a regular partner for Chris Smalling at the heart of his side’s defence.

Hummels has a contract with Dortmund until 2017 but is unlikely to renew terms so the Bundesliga side may want to cash in on him next summer.