Earlier this week Terry said he was hopeful of securing a deal but admitted he had yet to hold any talks with the club over an extension.
However, manager Mourinho believes the 34-year-old, who has started every league game this season, has won the right to play in the Premier League for another year.
Terry, who joined Chelsea 20 years ago as a schoolboy, had accepted the club’s rule that over-30s will be offered only yearly contracts.
“I think everybody wants to stay and especially him who has been here all his life,??? said Mourinho. ???He accepted our policy of going year after year with a smile and he accepted it as a challenge.
“Last year he won the challenge and this year he is winning the right of getting a one-year extension. Sooner or later he will get the season contract he deserves.”
Mourinho, meanwhile, added he was not talking about his own contract, despite reports of an extension in media.
“I’m different. I have two more years of contract. I want to stay. I think the club is happy but… I don’t need a contract right now,” Mourinho said.
“I will stay (as long as) Mr Abramovich will want me to stay.”