But a deal has been sorted and Hoffenheim coach Marco Pazzaiuoli told his club's website: "Ryan was on our wish list and, despite his age, he has considerable experience that will strengthen our squad."
Hoffenheim manager Ernst Tanner added: "We are very proud to be able to sign in Ryan Babel an internationally experienced player from a top club like Liverpool.
"We are convinced that he is a big gain for us with his character traits and his sporting qualities."
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