Nico Rosberg insists he is not focusing his attentions on contract negotiations for the 2017 Formula 1 season, but insists he wants to stay with Mercedes for 'many more years'.

Despite a difficult Monaco Grand Prix run to seventh and a retirement in the Spanish Grand Prix, Rosberg's four race wins so far this season keep him a comfortable 24 points clear of Mercedes team-mate Lewis Hamilton after six events.

However, a year on from when Hamilton firmed up a three-year deal ahead of the 2015 Monaco Grand Prix, some question marks remain over Rosberg's plans beyond the end of his current deal this year.

With former Ferrari driver Gerhard Berger reportedly being enlisted to join contract negotiations, Rosberg - who was linked with a Ferrari approach ahead of this year's Monaco race - remains certain he will be staying at Mercedes.

"It's not something that I've been thinking about, it's not really at the top of my mind," he insisted. "It's not been before this weekend and it won't be after this race and to just repeat, I am happy at Mercedes and Mercedes is pleased with me so I am sure I will be here for many more years."

It is understood negotiations are stalling over the length of the deal, with Mercedes seeking a similar long-term agreement to that of Hamilton following his strong start to the 2016 season.