Harry Kane privately fears Jose Mourinho’s methods will do more harm than good to his Tottenham career, Football Insider understands.

The England international, 26, dropped a bombshell at the weekend when he revealed in an interview with Jamie Redknapp he could quit Spurs and will not stay “just for the sake of it”.

Kane publicly limited his reasons to his ambitions and desire for trophies as he put the fear into Tottenham fans now fretting about losing their talismanic goal machine.

A well-placed Spurs source has told Football Insider that Kane is also concerned about Mourinho’s methods being conducive to team success and his own personal performances.

The England skipper developed into one of the world’s outstanding players under ex-manager Mauricio Pochettino, who implemented an aggressive, front foot playing style that created plenty of chances.

Kane reaped the benefits and 176 of his 181 Tottenham goals from just 278 matches came under the Argentine.

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His record under Mourinho is far from shabby – six goals from 10 games – but the prolific forward noted how the manager has reverted to cautious type as his reign has gone on.

Kane is said to have been alarmed how negative Spurs were set up in their marquee fixtures in the months before football’s suspension, notably against Liverpool, Chelsea and Man City but also against the likes of Wolves.

The forward is worried that this will be the theme of Mourinho’s tenure and could have a major knock-on effect in terms of the team’s creativity and his own goalscoring feats.

Kane has banged in 17 goals from 25 matches during a difficult season for Tottenham despite being sidelined since rupturing a tendon in his left hamstring on New Year’s Day.

He signed a six-year contract in June 2018 worth up to £200,000-a-week and that runs until 2024.

Spurs chiefs intend to hold their prize asset to his deal and are intent on giving him the platform to achieve his trophy ambitions in north London.

In other Tottenham years, it can be REVEALED that one of the club’s stars is in line to sign a SIX-year contract.