Spurs' striker has been linked with a move away - with Read Madrid, Juventus and both Manchester clubs amongst those interested - but former keeper Paul Robinson has urged the team to get the right deal for their star man, and find the right players to replace him.
He told the Daily Express newspaper: "It is difficult when a player of that magnitude and that quality says that they want to leave a club - it's just like with Gareth Bale.
"The deal has to be right. In the past, Spurs chairman Daniel Levy has made sure the deals are right and he has got excellent value for players.
"The deal would have to be right for everybody and it would have to be a very large sum of money that could be reinvested into the squad.
"The squad needs strengthening. To take Harry out of the equation you would need to reinvest the money very sensibly. You only have to look at Bale."
Spurs signed Soldado, Paulinho, Etienne Capoue, Nacer Chadli, Vlad Chiriches, Christan Eriksen and Lamela for around £106 million after the Welsh star left for Real in an £85.3 million move.
However, only Eriksen and Lamela were long term successes.