According to the Daily Mail, Celtic and Rangers are among a host of clubs pursuing Falkirk's 22-year-old defender Will Vaulks.
Vaulks was born on the Wirral and started his career with local club Tranmere Rovers, but after a loan spell with Workington Town, he was snapped up by Falkirk in 2013.
The centre back, who stands at just 5ft 11in - relatively small for a defender - has impressed since signing for Falkirk, and with 18 months left on his contract, there is interest building in his signature.
The Daily Mail report that Sporting Lisbon are looking to add Vaulks to their squad having swooped on Scottish football back in 2014, having signed Ryan Gauld from Dundee United.
However, it's also stated that Norwich City, Wigan Athletic and Hibernian, as well as Old Firm rivals Celtic and Rangers, are all looking to sign Vaulks.
Rangers only have Dominic Ball on loan from Rangers, and manager Mark Warburton may view Vaulks - who scored the winning goal in Falkirk's recent 2-1 win over Rangers - as a more long-term option in his defence.
Meanwhile, Celtic have had defensive problems all season, and Ronny Deila could look to bring in Vaulks to compete with Dedryck Boyata and Jozo Simunovic after a tough season at the back.
With so many teams looking to sign Vaulks, it will be hard for Falkirk to keep hold of their star defender, especially if they don't win promotion to the Scottish Premiership this term - and we may yet see a fight between Celtic and Rangers for his services, just as we did with Scott Allan over the summer, before the ex-Hibs midfielder signed for Celtic.