Speculation continues to suggest that a big-money bid from Old Trafford will be lodged for the England international, as Jose Mourinho seeks to bring in a new holding midfielder.
Spurs are understandably reluctant to part with a prized asset, having worked hard to piece together a squad capable of challenging for the Premier League title.
Pochettino remains confident that no player will be sold against his wishes, with rumours of interest from afar merely an indication of how far the club have come.
The Argentine tactician told reporters on the Dier talk: "That is a good signal for us, that other clubs are talking about our players.
“It means we have good players. But it's rumours."
Tottenham have offloaded Kyle Walker during the current transfer window, with a record-breaking deal taking the full-back to Manchester City.
They have, however, countered that by putting fresh terms to Kieran Trippier.
The club’s ability to keep star players happy and on board has been hailed by Premier League rivals, with Jose Mourinho quick to talk up Spurs’ strategy amid his supposed pursuit of Dier.
The Portuguese has said: "I'm not going to analyse individually all of our opponents.
"But I think they all have great conditions also to win the title. Everybody speaks about the dimension of the investment at Man City, but there is another team that I feel the dimension of their investment is also phenomenal: Tottenham.
"I think until now they spent zero pounds, right? For me the dimension of their investment is amazing. They keep everybody they want to keep. They keep Dele Alli, [Harry] Kane and [Toby] Alderweireld, they keep Eric Dier, they keep everyone they want to keep.
"They sold Kyle Walker I think because they wanted to sell. And probably because they think Trippier is as good as Walker. And he's younger than Walker. They keep everyone they want to keep."