Incoming boss Louis van Gaal looks set for a busy summer of transfer activity.
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Mats Hummels (Borussia Dortmund)
The Westfalenstadion rock is the right man to bring in to fill the void left by exiting veterans Nemanja Vidic and Rio Ferdinand and the German international may think the time is right for a fresh challenge.
Helped Jurgen Klopp’s side to back to back titles but over the past couple of seasons has seen his side slip further and further off the pace and watching top scorer Robert Lewandowski move to arch rivals Bayern Munich may prove the last straw for the 25 year old centre-back.