Sissoko, who joined Tottenham from Newcastle United in the summer transfer window, has not been in good form so far this season.
Pochettino has revealed that he was pleased with the attitude shown by the former Toulouse star in training during the week. The Argentine boss has also defended his earlier comments about Sissoko.
"His answer was good in the week, I am happy with the answer from him,” Pochettino told The Hertfordshire Mercury about Sissoko. “He is training very hard then it's up to me to decide whether he is involved or not."
When asked whether it was a risk to go public with his thoughts on Sissoko, Pochettino said: "I think when you ask me, you make it public. I need to answer. If you ask me about Sissoko after Chelsea, I am a person that likes to answer.
"You ask me why he was not involved in the squad and I explain why. It is a football decision. When you have 24 players plus younger players, my decision is about football – and football means all the things. Football is a word that involves many things."
Sissoko is a good midfielder, but he is inconsistent and he needs to sort it out.
The Frenchman has shown that he is capable of succeeding in the Premier League, and it is time that he proves that he is worth the £30 million that Tottenham paid to Newcastle - according to BBC Sport - in order to secure his services in the summer.