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I don't think Antony would get out this serious allegations levelled against him at Man Utd the same investigation that Greenwood was subjected to would also be accorded to him as of now at the international level a ban had already been imposed on him back at the club level there would be definitely a protest against him by many fans who would express their grievances against him consequently might compound Man Utd woes after dismal performance this season, however I think Erik ten Hag should settle whatever disagreement or differences he had with Jando Sancho in order to replace Antony if he was eventually ban by the club now that the team isn't well strengthen.
I don't know what the case is, but if Antony has to get a ban due to the case that ensnared him then I think Ten Hag must be ready to accept the consequences. Pellistri is also a good option if Ten Hag loses Antony, but Jadon Sancho can also play there. I prefer Sancho to play in his main position on the left wing, but if Ten Hag believes in him then he can also get that role.
Apart from that, Ten Hag also has many options to replace Antony, such as Shola Shoretire, Amad Diallo and Facundo Pellistri. But of course, Antony is an important player in that position so it will definitely be difficult to get the same game when he is not there for the team.