The Red Devils star was given a leave of absence following accusations of physical assault from three women earlier this month.
Antony recently returned to the United Kingdom from Brazil and met with officers from Greater Manchester Police on Friday for a voluntary interview.
The police investigation into the domestic abuse allegations against him will continue, but Antony can now train with his teammates, and the Sun has shared pictures of him in the back of a black Mercedes at Carrington.
The Brazil international was seen sitting in the back seat with only his distinctive neck tattoo visible.
Antony is not expected to be named in the matchday squad when Man United take on Crystal Palace at Old Trafford later today.
The 23-year-old has not played for the Red Devils since their 3-1 defeat at Arsenal on September 3 before the last international break, but he could return to action when they take on Galatasaray in the Champions League on Tuesday or against Brentford next Saturday.
The return of the former Ajax star comes as a much-needed boost for manager Erik ten Hag as Jadon Sancho is currently unavailable for selection due to disciplinary issues.
The England international was dropped from the matchday squad that faced Arsenal for not training properly, and he took to social media to call out Ten Hag to defend himself.
Sancho has refused to apologise and has been banished from the first team until further notice.
It remains to be seen if the former Borussia Dortmund star will change his mind anytime soon, but Man United are ready to move on without him, and having Antony back will be a relief for the manager.