Lewis Hamilton has denied claims by Bernie Ecclestone that he tried to broker a deal with Red Bull before signing for Mercedes last year.
Ecclestone has suggested that Hamilton came to him in mid-2012 to ask for his help in securing a move to Red Bull, only for owner Dietrich Mateschitz to offer first refusal to Mark Webber.
Hamilton, however, insists he never pushed for one team in particular and he is worried about Ecclestone's reasons for making such claims.
"He seems to only make comments about me for some reason," said Hamilton. "It makes me a bit nervous because we have quite a good relationship and I'm quite open with him about a lot of stuff.
"I don't really know what to say about the comments he made.
"I think he said something about me talking to Red Bull? I said to my management team to speak to all the teams and give me what the best options were.
"There was no particular one that I was pushing for more."
Hamilton scored his first podium for Mercedes in the Petronas Malaysian Grand Prix and he insists he was correct to join Ross Brawn's outfit.
"At the end of the day I am here and it's the best decision I have ever made," he added.