The England left-back has been in and out of the Blues line-up this season which has prompted rumours of a possible departure in the summer but Mourinho insists he will be getting a new deal and remaining at Stamford Bridge with some fellow veterans.
"The club politics, and these are correct politics I have to say if you analyse it by the club's perspective, is not to give long-term contracts to players over 30/31 years old," Mourinho said.
"But they are very, very important, our club is a fair club, it is a club that understands what the players give to the club and what they have to give.
"Normally by the lesser part of the season they have to renew their contract and to stay for one more season I think that's the logical evolution of the situation.
"In the same way the club trusts them and I think they trust the club. Everybody is calm and nobody is speaking about it every day because we think the situation will be a no problem situation."
For breaking stories and all the great banter like us on Facebook: facebook.com/tribalfootball