Manchester United are watching Hull City fullback Andrew Robertson.

The Daily Star says Old Trafford scouts watched Robertson in Hull's game against Brighton earlier this month.

United wanted a left-back in the January transfer window with England's Luke Shaw still out injured, but failed to find one.

Robertson was a £2.85m signing from Dundee United two years ago and signed a three-year contract.

But United might not have things all their own way in the battle for the defender as Robertson has also been watched by Manchester City, plus London clubs Arsenal and Tottenham.