The 30-year-old has flitted between Bayern Munich and Borussia Dortmund for the last 11 years and could be set to make a familiar move, this time back to Dortmund.
Hummels has won seven major trophies, including three consecutive Bundesliga titles with Bayern since signing in 2016.
The World Cup winner began his career with the German champions before making the move to Dortmund in 2009, following a successful year on loan there.
And according to Sky Germany, he is in advanced talks to make another return for £27m, with centre-back partner Jerome Boateng also set to leave Allianz Arena this summer.
READ MORE
9 bold transfer predictions that will DEFINITELY happen this summer
10 big players who are available on free transfers this summer
‘I don’t think Liverpool would look at Ollie Watkins, a striker isn’t a pressing issue for them – it’s Arsenal who need one’ Former Reds star explains why his old club don’t need an out-and-out forward this summer
‘He’ll still be playing at 40 at a good level because he’s in such good shape and looks after himself so well. He does everything to be a top professional’: Ex-Liverpool coach insists Mohamed Salah has plenty more miles in the tank
