The club's rivals in the Premier League have either already conducted some major business in the transfer market, or are being heavily linked with a significant addition before the end of the month.
However, while Pochettino has revealed that the club is "working behind the scenes", the Argentine has suggested that he will only sign a player if it makes sense in the long term.
The 45-year-old told reporters: "I'm not concerned, I'm not worried. We're working. We're awake to the market.
"If something is available on terms we can take, of course we'll do it. But if not, no.