Failing to tie Harry Kane down to a new and improved contract would be a “devastating” blow for Tottenham, according to Alex McLeish.

Speaking exclusively to Football Insider, the former Premier League and Scotland manager believes there will be an “underlying fear” in north London that the England striker wants a new challenge after coming through the youth ranks at Spurs.

The Independent report the club have opened informal talks with the 27-year-old, who signed a six-year deal back in 2018, over a new deal in north London amid interest from other top clubs.

Manchester City and Paris-Saint Germain are both said to be considering launching a move in the summer transfer window, with Spurs reportedly willing to offer a deal in excess of his current £200,000-a-week terms.

Kane has been in outstanding form this season, with 17 goals and 14 assists under his belt across all competitions.

McLeish has insisted Tottenham will throw the kitchen sink at trying to get their attacking talisman tied down but admitted there is the possibility of the striker wanting to try something new.

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McLeish told Football Insider: “Oof, I think it’s a must they sign him, to re-sign him, because I think it would be devastating to Jose’s project and Spurs in general to lose him.

“Let’s give you an example, let’s go back to Gareth Bale, when Gareth went, what was it, £80million to Real Madrid? It looked like: ‘Wow, we’ve got a big bunch of money, we can buy six or seven players and that means that we can strengthen the team to a degree where we haven’t been before.’

“Of course, that wasn’t the case. Losing one guy with the level that Harry Kane’s at can be devastating. Spurs have to do everything they can to get that guy signed up again. However, it’s easy for me to say they must do everything they can to keep him, because they will, there’s no doubt about that.

“They will do everything they can, they will throw the kitchen sink, everything, to keep Harry at Spurs.

“Harry knows that, his agents probably know that and the underlying fear for all Spurs people, and threat for all Spurs people, is that Harry wants to do something else.”

In other news, Mauricio Pochettino has set his sights on signing his ‘best friend’ while at Tottenham, a player he ‘lunched with every day’ while at the club.