Fans can't believe what shirt Mats Hummels was spotted wearing during his pre-season break

Mats Hummels has had fans in disbelief after spotting his choice of football shirt while on holiday.

The 35-year-old is a free agent after leaving Borussia Dortmund following the Champions League final loss to Real Madrid at Wembley.

A number of Premier League clubs were linked with Hummels, while Real were also said to be exploring him as a short-term option amid a centre-back crisis.

Bologna, who have qualified for the Champions League next season, are also well in the race to bring in Hummels on a free transfer.

But he has no agreement with any club just yet and has been enjoying his time off.

On Thursday, Hummels shared a picture of him on a football pitch.

And the shirt he was wearing for the kickabout has caused quite a stir. Hummels was wearing an old Liverpool away shirt, with Virgil van Dijk's name and number on the back.

The top is from the 2018/19 season when Hummels, playing for Bayern Munich, came up against Van Dijk and Liverpool at the Allianz Arena.

The Dutchman scored Liverpool's second goal in a 3-1 win and appeared to swap shirts with his fellow central defender.

Image: Instagram/@aussenrist15

Hummels clearly holds the jersey in high esteem and took to Instagram to give props to Van Dijk.

He wrote: "One of the best CB’s ever…wearing a @virgilvandijk jersey sorry for that gag... you are a beast."

Hummels' comment section was flooded with replies, with one writing: "Real recognise real."

Another said: "No gag, just real talk."

A third added: "The best CB wearing the best CB shirt."

Another commented: "You are the best too Mats."

This is the second instance Hummels has been spotted rocking an unexpected shirt this summer.

Image: Getty

After being snubbed by Germany boss Julian Nagelsmann for the Euro 2024 home soil, he was seen training wearing a Greece shirt from Euro 2012.

He captioned the post: "It's difficult to find a jersey for sports that doesn't cause any stupid rumours afterwards."