The Ecuadorian has not set the world alight since arriving from Brighton in the summer.
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"I expect more from him even if he is doing well," said Pochettino, as they prepare to take on Caicedo's old team in midweek.
"I think next season I have no doubt he will be much better.
"Now he knows what it means to play for Chelsea, all of the pressure off. The players believe in the way that we work and they agree in the way we want to apply our philosophy and the way to play and that is fantastic.
"The idea to have players that really trust and believe and that is why the future will be amazing. He is one of the players that still has room to improve."