After Spurs finally decided to make an opening offer for Grealish on Tuesday, it now seems the 22-year-old will be staying put at Villa Park for the foreseeable future.
Spurs were also the only team in Europe's top five leagues and only English professional side not to make a single addition.
When asked about his previous comments, Pochettino said the fact the club was able to keep stars like Harry Kane and Son Heung-Min while spending £1bn on a new stadium and redeveloping their training ground was "brave". [So is] building a stadium that is almost £1 billion - that is true, don't believe £400 million.
Deals for players like Danny Rose, Toby Alderweireld and Mousa Dembélé are yet to materialise however and Pochettino said he expected the players who remained at the club following the close of the window to knuckle down. That is true, don't believe in £400m, that is the truth.
The Tottenham boss says that the financial constraints of redeveloping the training facilities and seeing the cost of building the new stadium rise to £1 billion due to Brexit were key factors in their decision not to buy this summer.
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"For me [that] is to be fearless".
Pochettino added: "I am happy to keep all the squad together, there were many rumours during the summer about players out". I think it is clear what is going on and how we are going to move in the future.
He added: "Of course maybe in the mind of everyone they will say, "Oh Tottenham didn't sign", but to sign for the sake of signing? It's a fearless decision".
A new contract will see the England Under-21 global move on to more than £40,000 a week at Villa Park, as Bruce keeps the young star on side in a bid to make it third time lucky and return to the Premier League come May.
"We didn't sell players and with 25 players in the squad it is hard to add players".