Tottenham Hotspur has tweeted their 'best wishes' to Fabrice Muamba.
It was during a game between Bolton and Spurs in March when Muamba collapsed.
Everyone at the club sends their best wishes to Fabrice Muamba who announced his retirement today. We wish him every success in the future.
More top news
Ten people have been taken to hospital and another two treated for injuries after a bus crashed into a tree in east London.
Cloudy skies for most as the Bank Holiday weekend begins - with brighter breaks through the south-east, the Midlands and East Anglia.
Six people have begun living in a dome in Hawaii to simulate what life would be like on Mars.