Englishmen and are both attracting interest from other clubs.
Tottenham chairman Daniel Levy only tends to do business on his terms and there will be no desire on his part to allow his club's biggest star to make a domestic rival stronger - particularly at a time when Spurs are on the brink of moving into their new stadium.
Dele Alli was the last player signed by Tottenham in a winter transfer window when he moved to the club for just £5m from MK Dons in 2015 and Pochettino admitted it is hard to bring players to the club in January.
"There are a lot of rumours in the media". Personally I think Everton need to get Bolasie into the side, he showed glimpses of the form that led to his £25million pound move from Crystal Palace and he could be the key man for Everton moving forward.
"I am confident always", Pochettino said.
"If you want to sign players [in January], there must be an opportunity and it's hard to find these opportunities", Pochettino said.
"Or, like Liverpool or Barca, they pay a lot of money and you can not stop the players like Van Dijk and Coutinho".
"That is the situation of this transfer window and that is why it is always hard". It's about how I believe, how we believe, and make things happen.
"We're sure Dad would have enjoyed watching the current team play, in the way that he always advocated".
"I'm not concerned, I'm not anxious". We're working. We're awake to the market.
"This is a message for our fans and for everyone: Toby still has two-and-a-half years of contract", said Pochettino, as quoted by Sky Sports, going on to reference Lionel Messi signing a new Barcelona contract in November, which was due to expire in the summer of 2018.
"We are in a good mood and in a good way to try and compete until the end of the season, to try to be in the top four" Pochettino said.
"For Harry it's so special to win titles and trophies at Tottenham".
A draw is available at 27/5 odds at Unibet, and an away win can get you 25/12 odds at the same bookmaker.