The Catalans are looking to bolster their defence with a commanding figure this summer.
German international Hummels fits the bill, and according to reports in Bild the player has a release clause of €37 million which will run out on April 1.
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Liverpool have unveiled their new home kit for next season, sticking with the hugely popular retro styling of the current shirt.
The reputation of the Premier League means it is the most popular and one of the most watched leagues in the world.