The Blues boss says he "thinks" all three players will still be at Stamford Bridge next season, but admitted he expects a flurry of transfer activity during the summer
All three have just matter of weeks left to run on their current deals, with the left-back visibly emotional following the Blues final game of the season at Stamford Bridge on Sunday.
Terry recently underlined his desire to end his career with Chelsea, and Mourinho says he feels the trio's association with the club will not end this season.
"Again, they are with the club on their future," he told reporters. "I think they will play [for Chelsea] again. I think so."
Mourinho's men saw their Premier League title challenge all but ended by Sunday's goalless draw against Norwich City in a tame display that came shortly after their Champions League exit to Atletico Madrid.
It means Mourinho will end his first season back at Stamford Bridge without a trophy and the Portuguese expects a busy summer of comings and goings for the club in the transfer window.
"Now it's time to wait a little. The summer is a long summer for us," he said.
"For you, the media, with the World Cup, it's a different story. For the players involved in the World Cup it's a different story.
"But for us, as a club, it's a long time to be calm and to sit and to discuss and to analyse options and the market and possibilities. It's a long summer for us."