Thiago Silva admits he already has an eye on a new deal with Chelsea.
The 36 year-old signed for Chelsea on a free transfer from PSG, penning a one-year contract in the process.
The Brazil star is at ease with the length of his deal and hinted he could well extend his stay in west London.
Ahead of the Carabao Cup clash against old rivals Tottenham, Silva told Chelsea's official matchday programme: "I'm totally relaxed about the contract and whether Chelsea will want to renew it or not, I don't know.
"If I haven't met expectations or contributed then we'll sit down and talk about that. But I'm not worried at all.
"I will do my best possible and really contribute to this team, this new project. I've accepted this new challenge, it's going to be really good for me.
"Everyone knows that my ambition is to play in the World Cup in two years' time when I'll be 38. That's a great responsibility."
