Mourinho takes his side to the King Power Stadium knowing that a win would leave them needing only to beat Crystal Palace at home on Sunday to win the title.
But Leicester have won their last four games to move out of the bottom three and Mourinho says that run of form does not come as a shock to him, unlike their perilous league position.
He said: “For me it’s a good team, good players. I played them very early in the season at Stamford Bridge (winning 2 0 in August). “I could immediately feel the quality of the team.
“I was surprised that they were in a bad position. I’m not surprised they are??out of the relegation zone. I will not be surprised when they stay in the??division.
“Their situation is very good. For the quality of their team, I think they are??going to survive.”
Mourinho also had plenty of praise for Leicester midfielder Esteban Cambiasso, a player he knows well from their time together at Inter Milan.
“I won the treble with Cambiasso at Inter Milan in 2010,” he??added. “He was fundamental in my golden team. He’s one of the players who means a lot to me, and he’s been phenomenal for them. I’m very happy for him.”