While the one-year extension has bought United some time, it seems Martial’s camp are far from happy with the current offers being presented to them.
Martial’s agent, Philippe Lamboley, stated in the summer that the France international wanted to leave the club after a breakdown in negotiations.
And it seems those discussions have failed to improve, with Lamboley suggesting a new long-term deal is far from being agreed.
“I am very pessimistic about discussions going positively,” he told RMC.
“They’ve already made several offers that come nowhere near to what we expect.”
Martial has only started nine Premier League games this season for United, with Jose Mourinho constantly tinkering his attacking positions.
But the 23-year-old is still the club’s leading goalscorer with seven goals in the English top flight.
He bagged both goals in the impressive 2-2 draw with Chelsea back in October and also found the net in as United shared the points with Arsenal earlier this month.
Despite his good form in front of goal, Martial still struggles to maintain a regular starting place in United’s starting line-up.
Both Chelsea and Arsenal were touted as potential destinations for the disgruntled winger in the past summer.
But it was reported before the start of the season that there was a reason United were strongly against selling up.
Martial could end up costing United a total of £57.6million, depending on further clauses yet to be activated, having been bought from Monaco back in 2013.
And reports stated the Ligue 1 side are due half of any profit United would get from selling Martial.
That has seemingly put the Red Devils off selling the Frenchman.
Meanwhile, uncertainty is growing over whether or not the United board will offer Mourinho funds in the transfer window.
The manager has spent £350m on new players since his arrival at Old Trafford in the summer of 2016.
And Mourinho was vocal in his criticism of the board for their failure to sign a new centre-half in the summer window.
Mourinho is seeking to strengthen his defence but, with his job under increasing scrutiny, the board may refrain from fully backing his spending wishes next month.
United play Cardiff on Saturday before hosting Huddersfield on Boxing Day.
They then welcome Bournemouth to Old Trafford on Sunday, December 30 and see out the Christmas period with a trip to Newcastle on January 2.