Manchester United and Manchester City could battle it out for £28million-rated Sevilla defender Clement Lenglet.
That is according to the Daily Mail, who say the duo have both checked in on the 22-year-old stopper, who can also operate at left back.
Lenglet is a French Under-21 international renowned for his strength and composure on the ball.
Jose Mourinho is keen to strengthen his backline and is seeking reinforcements at both centre-half and full-back when the winter sales open in January.
Matic hobbles off at Watford
Manchester United fans were left fearing the worst after Nemanja Matic hobbled off during the Red Devils' clash against Watford on Tuesday.
The Serbian limped out of the action at Vicarage Road and was replaced by Ander Herrera just before the hour mark.
Matic has been ever-present in Jose Mourinho's side since making his £40million move from Chelsea in the summer, starting every single Premier League game to date.
Injury to the Serbian now would come as a huge blow to United who face Arsenal next on Saturday.
Watford 2-4 United - 5 talking points
Ashley Young fired Manchester United back into the title race with a devastating two-goal blast against his first club Watford.
Young stung the Hornets with the opener at Vicarage Road and then whipped a stunning 25-yard free-kick into the top corner six minutes later as United closed the gap on leaders Manchester City to five points.
Anthony Martial made it 3-0 after 31 minutes to kill the contest and keep Jose Mourinho's men within earshot of the noisy neighbours.
But it was Young's brilliant one-two, against the club who sold him for £9.75m almost 11 years ago, which demonstrated why Gareth Southgate recalled him to the England squad earlier this month.
Here's five talking points from the game...