Championship side Derby County have appointed England's record goalscorer Wayne Rooney as their new manager on a two-and-a-half-year contract.

The 35-year-old, who had been in interim charge since Phillip Cocu was sacked on 14 November, has now also officially retired as a player.

Rooney has overseen nine games so far, winning three and drawing four.

"The opportunity to follow Brian Clough, Jim Smith, Frank Lampard and Phillip Cocu is an honour," he said.

"I knew instinctively Derby County was the place for me."