"We have a very good squad, with very good players and it is very hard to add players to that", Pochettino said.
That led to Spurs becoming the first Premier League club to go through a summer transfer window without additions since its introduction in 2003.
"Maybe some players will stay here to try to reach the level, to give more time, for different reasons - because maybe we don't want to take risks, because they need more preparation, because the background or history of their injuries is different". 'Of course maybe in the mind of everyone they will say "Oh Tottenham didn't sign anyone" but to sign for the sake of signing?' "But when it is not possible, why create a problem that can only disturb or not help the club and your teammates?"
"I think it's so hard now because it's only four hours until the end and I don't have news now", Pochettino told a news conference.
Asked why the club have struggled to recruit players this summer, Pochettino replied: "The market was insane".More news: Alexa can now notify users when it learns new things
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Toby Alderweireld, Danny Rose and Mousa Dembele could still leave in the next few weeks, but Pochettino has been able to keep hold of the likes of Harry Kane, Christian Eriksen and Kieran Trippier. It's a massive challenge for us to try to deliver the best tools for them to get fit and then to prepare them for the whole season, not only for one, two or three games or for one month.
"I am not anxious, not sad, I am so happy". If we have all the squad thinking as individuals rather than as a collective game, you can not achieve what you want and can not succeed. I think it is clear what is going on and how we are going to move in the future.
"If you cannot add players who can improve your squad, the most important thing is to make sure you do not lose your best player".
"For me they are part of the team".
"We didn't sell players and with 25 players in the squad it is hard to add players".