Newcastle United, Everton and Tottenham are also keeping an eye on the 19-times capped England international who the Saints hope will fetch £25m in the current market.
The chasing quartet are encouraged by news from Bertrand’s camp that the player wants out of St Mary’s even if the beleaguered south coast club avoid relegation.
At 28, Bertrand, who began his career at Chelsea, wants to win silverware as well as maximising his potential to play for England. At the moment, the left-back is on the fringes of Gareth Southgate’s 23-man squad which will make the trip to Russia this summer.
With 374 club appearances since turning professional in 2006, Bertrand is a relatively cheap solution for suitors where left-back is an issue. While Manchester United continue to look for answers to their Luke Shaw sized problem, Tottenham face losing 29-year-old Danny Rose this summer.
For Southampton, United represent the quick-fix solution with Shaw set to be sold this summer. The 22-year-old former Saint was linked with a south coast return last summer; maybe this summer it will come true.