The 25-year old defender has signed a three-year deal with Forest for an undisclosed fee after spending the past three seasons in Germany.
Former England U21 international Mancienne, who started his career with Chelsea, spent time on loan with QPR and Wolves before signing with Hamburg in May 2011. He made 51 appearances in all competitions for die Rothosen.
Nottingham Forest FC (@Official_NFFC) July 16, 2014
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