Dortmund sign Japanese teenager on loan
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Borussia Dortmund have signed 17-year-old Japanese midfielder Mitsuru Maruoka on a two-year loan deal from Shinji Kagawa's ex-club Cerezo Osaka.

Maruoka, who turns 18 on 6 January, is expected to initially play for Dortmund's reserves in Germany's third division and Borussia have an option to buy him when the deal expires in June 2015.

The teenager follows in the footsteps of Kagawa, who signed for Dortmund from Osaka in 2010 for €350,000 before signing with Manchester United for €20 last year.

Kagawa helped Dortmund win the Bundesliga titles in 2010/11 and 2011/12.