The Wales international scored a stunning hat-trick in Spurs’ 4-3 defeat to Inter Milan in Wednesday night’s Champions league Group A encounter at the San Siro.
Redknapp said: “Tottenham is a club that is looking to progress, not to sell its best players.
“If Tottenham sell Gareth Bale now, it would send out the wrong signals; it would be a club that would be a selling club.
“He’s a player that we hope to build a team around. He signed a new contract at the club and, hopefully, he’ll be here for a good few years to come.
“If Tottenham progress and become a Champions League team on a regular basis, he’ll become a big part of the team.”
He added: “You couldn’t meet as nice a boy. I think he’s happy where he is and he’s developing as a player.
“A year ago, he’s nowhere near that player that we see now.
“This is where he belongs and this is where he’ll progress.
“There’s no way that the club would or should contemplate ever selling him at the moment, certainly not in the near future.
“We should be looking to improve the team, not sell when we get an offer for one of our very, very best players.”