Since moving from Real Madrid to Italy in 2019, the Frenchman has made 167 appearances for the Italian team.
However, Hernandez signed with Milan while working under club director Paolo Maldini, who was fired earlier in June, fueling rumors that the 25-year-old will leave the club.
Man United may be interested in the left-back, according to La Gazzetta dello Sport, but they would need to spend at least €60 million (£51.35 million) to acquire him.
In February, Hernandez expanded his agreement with the Rossoneri, quadrupling his pay in the process. He is now committed to the Italian side through
the 2026 summer.
Manchester City is rumored to be a rival for the Red Devils, and top LaLiga teams may also try to lure him back to Spain, where he began his professional career.
While at Rayo Majadahonda and Atletico Madrid throughout his formative years, he was unable to go past the B team, but he did join Alaves on loan for a season.
He then joined Real Madrid before spending the season before to his transfer to AC Milan on loan at Real Sociedad.
While things had been going smoothly in Italy, securing the Serie A championship in 2022, Maldini's recent expulsion has sparked unrest among AC Milan's players.
Sandro Tonali and goalkeeper Mike Maignan are two more players who are believed to be upset with the choice, in addition to Hernandez.
As Napoli won the championship one year after Hernandez's team won it, AC Milan finished fourth in Serie A last season.
After finishing third in the Premier League in Erik ten Hag's first season as manager at Old Trafford, Manchester United is grouped for Champions League football.
While things had been going smoothly in Italy, securing the Serie A championship in 2022, Maldini's recent expulsion has sparked unrest among AC Milan's players.
Sandro Tonali and goalkeeper Mike Maignan are two more players who are believed to be upset with the choice, in addition to Hernandez.
As Napoli won the championship one year after Hernandez's team won it, AC Milan finished fourth in Serie A last season.
After finishing third in the Premier League in Erik ten Hag's first season as manager at Old Trafford, Manchester United is grouped for Champions League football.