Berbatov has established himself as a firm favourite at Spurs

The 26-year-old has scored 21 goals in his first season in English football to become the subject of transfer rumours.

However, Jol said: "I have no fears - from anybody or any circumstances. The chairman would not sanction it, even if I would like to.

"I don't see any reason why we should. We made a lot of profit over the last six months and we don't have to sell."

There is a lot more to come because Dimitar is such a good finisher Martin Jol

Tottenham sold Michael Carrick to Manchester United for �18.6m last summer but Jol added: "We have kept our best players 99% of the time over the last five or six years."

Spurs paid German side Bayer Leverkusen �10.9m for Berbatov, who has been linked with United and Chelsea among others, and Jol believes the forward will become more prolific the longer he stays at the club.

"There is still a lot to improve with the team and with Dimitar, he can score 30 or 35 goals in all competitions," stated Jol, who has been impressed with Berbatov's adjustment to the Premiership.

"There is a lot more to come because he is such a good finisher.

"He noticed in the first couple of months that it was different, so I told him 'welcome to the Premiership'.

"He did so much work in training and in the gym. You can never say you are 100% convinced when you sign a player from abroad, it's a tough league.

"But talent-wise, everyone in Germany, including Bayern Munich, knew it and would love him."