Middlesbrough brought the player to England on a season-long loan and he impressed at the Riverside, helping to stabilise the Teessiders' place in the Premier League.
Form there prompted Chelsea to take him to Stamford Bridge but he made just 48 starts in four seasons and eventually joined the Magpies on a free transfer, where again his appearances were limited due to injury and poor form.
He remains a regular for Cameroon, having amassed more than 100 caps and was a member of Paul Le Guen's squad for the Africa Cup of Nations in Angola, losing in the quarter-finals to eventual winners Egypt.
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