Red Bull's Sebastian Vettel has denied that he has signed any agreement to join Ferrari in the future.  Two weeks ago, it was reported that Ferrari already have a deal in place with the German.  But Vettel again dismissed the claim and said he was concerned it could cause problems at Red Bull.  Yesterday, Vettel beat Alonso to win the Indian Grand Prix and extend his championship lead over the Spaniard to 13 points.

BBC Sport