Mason was spotted on the grass at Carrington during Monday's session.
See pictures of Monday's training session at our Carrington base.
Just six per cent separated the top three United players after Sunday’s 1-1 draw with Arsenal.
United Women's clash with Arsenal was watched by a landmark number of supporters on Sunday afternoon.
Our interim boss says United's luck will soon change in front of goal.
Nous felt the Reds did enough to take all three points against Chelsea.
The Dutchman was asked about his options from the bench, after Sunday's clash with Chelsea.
The results of our fan poll are in, with one Red emerging the clear winner.
Van Nistelrooy felt his side left it all on the pitch in Sunday's blood-and-thunder draw with Chelsea.
The spoils were shared in Ruud van Nistelrooy's first Premier League game at the helm.
Read how Sunday's contest with the Gunners unfolded at Leigh Sports Village.
See which XI Ruud van Nistelrooy has selected for his first league game in charge.
Diogo is hugely impressed with the work Ruben has done in Portugal with Sporting.
Read an extract of United Review's big interview with Alejandro - you don't want to miss it.
Read what Van Nistelrooy told journalists in the second half of his media briefing before Chelsea's visit.
You could be part of a record crowd at Leigh Sports Village on Sunday! Here's everything you need to know...
The Brazilian claims our accolade for his stunning long-ranger against Leicester - enjoy it again here!
Congratulations to Alejandro, who has been voted by supporters as our standout performer in October.
The key details and Travis Binnion's thoughts after a defeat on the road for the young Reds.
Read how Adam Lawrence's side fared in our trip to Thorp Arch in the U18 Premier League North.
Van Nistelrooy is gearing up for a tough test against Chelsea at Old Trafford, in his second game in interim charge.
Ruud van Nistelrooy is waiting on the fitness of a Reds midfielder before Sunday's game.
Tullis-Joyce has made a near-flawless start to her first campaign as United Women's first-choice goalkeeper…
The Reds wear black tie in a new campaign exploring our collection of occasion tailoring.
Here's why Casemiro, Garnacho and Onana are the three Reds vying for your pick in October's poll.
Six Reds demonstrate the easy elegance of Paul Smith eveningwear.
All you need to know about United's new head coach.
Don’t miss these images of our new head coach from Sporting.
It's official! Read the club statement here...
See the key quotes from Marc's pre-Arsenal press conference, before Sunday's WSL fixture at Leigh Sports Village.