Tying Harry Kane down to a new contract would be the “biggest” and “best” signing Tottenham could make in January, according to Noel Whelan.

Speaking exclusively to Football Insider, the former Leeds United forward heaped praise on the 27-year-old but said that he would leave if Jose Mourinho’s side do not win trophies in the near future.

The Independent report that the club have opened up “initial dialogue” with the England captain regarding a new long-term deal.

Kane signed a lucrative six-year contract in 2018 but chairman Daniel Levy is said to be conscious of keeping the club’s talisman full content amid reported interest from Man City.

The striker’s 24 appearances across all competitions this season have yielded a remarkable 17 goals and 14 assists.

When asked by Football Insider for his thoughts on Spurs potentially extending Kane’s contract, Whelan said: “Biggest, best signing they could make.

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“He is the best player at the club. A goalscorer who is a natural from inside the box, outside the box, with his left, right or head – you do not get many players like that.

“Spurs have got an absolute diamond in their squad there and if they don’t reward him and they don’t get him tied down, they will struggle to keep hold of him.

“The same goes if Spurs don’t start winning things. They have a great opportunity in the cup and I very much doubt that Jose Mourinho will go light with the team, he will be desperate to get to the final. That would be a start.

“A player like that demands winning trophies and winning medals and if it is not at Tottenham, it will be somewhere else.” 

In other news, 29-year-old Tottenham player tipped to exit this month with new signing potentially replacing him.