Borussia Dortmund's veteran captain Sebastian Kehl has said he will retire in June 2015, ­having just signed a year's contract extension.

The 34-year-old, who made the last of his 31 appearances for Germany at the 2006 World Cup, joined Dortmund in 2002.

Kehl has made 289 appearances in the Bundesliga and was part of the teams which won the Bundesliga title in 2002 and 2011, plus 2012 when Borussia won the league and cup double.