The England striker is said to be attracting interest from several of Europe's biggest clubs.
Although the quartet of interested clubs can offer Champions League football, Mason has insisted that Mauricio Pochettino's side are on the rise, and thus, the smartest thing Kane could do would be to stay at White Hart Lane.
"We're very stable and when you look at a top player like Harry, he wants to learn and get better. He is only 22, he is a very grounded lad and he knows that Tottenham is the best club for him at this point in his career. He's excited at the road we're taking and he wants to be a part of it," he said.
After a slow start to the season, the former Norwich and Leicester loanee has certainly rediscovered his shooting boots. A hat-trick against Bournemouth kick-started a run that stands at nine goals in his last six games in all competitions.
His form has been a large reason for Spurs sitting on the cusp of a top-four spot, and his goal against Qarabag on Thursday booked the club's place in the next stage of the Europa League.
And while the north London side are not currently in the Champions League, their form in the top flight suggests that they could well be battling among Europe's elite once again next season.