Manchester United are reportedly interested in Celtic star Kieran Tierney.
Left-back Tierney, 19, has also been attracting the attentions of Arsenal.
Tierney has played an important role as Celtic have swept all before them in the Scottish Premier Division, currently leading the table by 25 points.
He has been watched by United this season, most recently in the 1-1 draw with Old Firm rivals Rangers on 12 March, when head scout Marcel Bout was in attendance. United were also reportedly impressed by Tierney when they played out a 3-3 draw with Manchester City in September.
United boss Jose Mourinho is apparently keen to reshuffle his pack at the full-back positions. Matteo Darmian has failed to hold down a regular spot, while Luke Shaw has struggled as well.
Celtic are thought to be holding out for £10m for Tierney, who has three caps for the Scotland national side.
United could also be in the market for his Celtic colleague Moussa Dembele, also wanted by Chelsea. The Blues tried to sign the 32-goal forward in January.
By Steve Osborne @BlizzardSteve75