Mainz have agreed a contract extension with Elkin Soto until the summer of 2013.
Mainz have admitted that Bayer Leverkusen's financial offer for Andre Schurrle was too good to ignore.
Mainz are understood to have signed rising star Marcel Risse from Bayer Leverkusen on a one-year loan deal.
Bayer Leverkusen have knocked back an approach from Real Madrid for Marcel Risse.
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