The Denmark international has made a slow start to the campaign, but Pochettino now expects him to rediscover his form.
The Tottenham manager said: “Perhaps subconsciously, the speculation can affect you when you are in the process of negotiating your future.
“It is not about money. It's about your future. Sometimes it is difficult but we trust Christian, he is happy to stay and there is no doubt he will improve his performance in the future. If the club give him a better contract, it is because he deserves it.
“For players it is about performances. It is about being focused in training, improving fitness, showing quality, the relationship with your team-mates on the pitch. There is no doubt about Christian's quality or his skills.
“This contract is important for him and for us. It will stop the rumours and he can be focused only on playing football. This is the last time we will talk about Eriksen's contract and the rumours.
"It is good for him and the club. We are all happy."