Overnight Radio Le Mans announced that Mark Webber had put pen to paper making the deal official, meaning he would join Porsche in their assault on the World Endurance Championship.

Webber is expected to quit F1 at the end of the season, when his contract with Red Bull expires.

Rumours of a move to Porsche have been simmering for some time, and the car giant last week did not deny an interest in hiring Webber for their new Le Mans sportscar program.