Celtic are reportedly in 'advanced talks' with Tottenham Hotspur over a permanent deal to sign defender Cameron Carter-Vickers.
The 24-year-old moved to the Hoops from Spurs on a season-long loan deal last summer and he has since been a key player for Ange Postecoglou's side, making 41 appearances across all competitions this campaign.
According to SBI Soccer, Celtic have now begun negotiations with Tottenham over a permanent deal for the USA international, which could see the Hoops pay around £6m plus an additional £4m in add-ons.
However, the report adds that the Hoops may face stern competition from Leicester City, Watford and Wolverhampton Wanderers for the player's signature.
Postecoglou revealed in January that he is keen to see Carter-Vickers move to Parkhead permanently and suggested that Celtic recruited the centre-back with a long-term plan in mind.
Carter-Vickers has only made five senior appearances for Spurs since 2016 and has been shipped out on loan seven times to the likes of Swansea City, Bournemouth, Sheffield United and now Celtic.