The England international has been unavailable since the Premier League win over Luton Town on 11 November and he continues to work hard on his rehabilitation with the support of medical staff.
In a sign of his recent progression, the 24-year-old forward was pictured training individually on Wednesday morning as the rest of his team-mates completed a recovery session nearby.
Like all United fans, Mount enjoyed the dramatic Boxing Day victory over Aston Villa and, via Instagram, he congratulated team-mate Rasmus Hojlund on scoring a first Premier League goal.
Erik ten Hag could provide an update on Mason's progress in his weekly press conference this coming Friday.