Tottenham have joined the race to sign Rangers rising star Leon King in January, Football Insider can reveal.

The 15-year-old defender’s future at Ibrox is up in the air after he rejected the club’s offer of a first professional contract.

A Tottenham source has told Football Insider the club have set their sights on the centre-back ahead of the January window.

King has also attracted interest from the likes of Manchester City, Liverpool and Chelsea, as well as Bundesliga big guns RB Leipzig.

The starlet does not turn 16 until next month, but his potential is such he is part of Scotland’s Under-17s squad and is regarded as one of the best in his age group in Britain.

Rangers fear they could now lose King in the same way they did with Billy Gilmour two years ago.

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The playmaker couldn’t agree a professional contract with the Glasgow giants and was lured down south by Chelsea for a fee of around £500,000.

Gilmour has progressed through the youth ranks at Stamford Bridge and already played four times for the first team, twice in the Premier League and twice in the League Cup this season.

Rangers staff rate Glasgow-born King equally highly and he featured for Graeme Murty’s development side aged just 14.

There are growing fears his army of suitors will make him an offer ahead of the January window that he can’t refuse.

In other Rangers news, it can be REVEALED that the club have landed a SENSATIONAL near-£20million windfall.