Manchester United are eyeing Celtic fullback Kieran Tierney.

The Daily Mail says United boss Jose Mourinho is having him watched at today's Old Firm match.

The 20-year-old - already a full Scotland international - comes highly recommended by the United scouts.

They hope he can nail the left-back position for the next decade, with Luke Shaw all set to be bombed out of Old Trafford in the summer.

Mourinho went to watch him when Scotland took on Costa Rica - but injury meant Liverpool's Andy Robertson took the left-back berth.