The 22-year-old forward joined United in 2015, becoming the most expensive teenage footballer at the time with the fee rising to a possible £58 million.
Martial’s failure to hold down a starting place under Jose Mourinho has led to speculation over his future, but it appears United are keen to keep the Frenchman at Old Trafford and discussions have been ongoing for several months.
Martial made a flying start to his United career, scoring a debut goal against Liverpool as he went on to score 11 goals in his first Premier League season under Louis van Gaal’s management.
However, Martial has struggled to build on that promise since Mourinho took over in 2016.
The former Monaco striker has made just 11 Premier League starts in each of his two seasons under Mourinho, scoring a total of 13 goals in that time.