Lewis Hamilton says he has started negotiations with Mercedes over a new contract to stay with the team beyond this season.

The seven-time champion signed only a one-year deal last winter but has indicated several times that he is keen to race on.

"Not a lot to say too much on, but we have had discussions and things are positive," he said.

Hamilton also indicated he would be happy for Valtteri Bottas to stay.

The Finn is out of contract this season and team boss Toto Wolff has yet to decide whether to keep Bottas or replace him with Williams driver George Russell, who starred on a one-off appearance substituting for Hamilton at last year's Sakhir Grand Prix.