The Brazilian forward has nothing but praise for the defender and Mario Gotze, and is optimistic about the Blaugrana's chances in the Champions League
Former Barcelona star Ronaldinho believes that Borussia Dortmund defender Mats Hummels would be a good addition for the Spanish powerhouse.
The Blaugrana are keen to add fresh blood to their defence in the summer transfer window and the Germany international is reportedly one of their top targets - much to the delight of the Brazil veteran.
