Martial was particularly prolific in October after the 22-year-old scored four goals in three games in the Premier League either side of the global break.
Ahead of a trip to Bournemouth on Saturday, United are eighth in the Premier League, five points behind fourth-placed Arsenal.
"He's someone I've worked with when I was assistant at United, he's a really good lad, quite shy, a great professional and very talented, plus he's still only young, so from a United fan's perspective we all hope that we keep him". I told him to forget it. I've gone past the point of wide players generally coming back and doubling up and all that.
There's no denying that they're going in the right direction but it's very easy to pick holes in their performances and their defence is not the only negative.
United fans will just be hoping they get to see that level of performance more often and the type of jaw-dropping dribbling that saw him go viral against Real Madrid in pre-season previous year. "They are ready to play really".
"I don't think we see it as a free hit any more, these kinds of games, because we believe we can beat them". What Martial tends to do is wait and wait and hangs wide.
Mourinho surprisingly dropped the Belgian from United's starting line-up for the 2-1 victory over Everton last weekend, as the striker instead came off the bench in the 65th minute of the game, when his side were already two goals up.
United rallied from two goals down against Newcastle earlier this month to secure a memorable 3-2 win at Old Trafford under the cloud of a report that the manager would be sacked regardless of the outcome of that Premier League encounter.
Zlatan Ibrahimovic and Henrikh Mkhitaryan occupied attacking roles in the 2016-17 season before Mourinho added Romelu Lukaku and Alexis Sanchez in his second campaign.
With reports the Frenchman's sale would be used as collateral to sign Ivan Perisic before the start of the season, his recent turn of form has prompted a change of heart from Mourinho.
It has emerged that the reason for his now-infamous training ground exchange with Paul Pogba stemmed from an Instagram post from the French midfielder during Manchester United's Carabao Cup exit at the hands of Derby County in September.
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