Many a player has had a reinvention and found their true place. Joelinton and Dembele are two brilliant examples. It's impossible to say quite how well a player will translate to another position, but theoretically, Antony has many of the qualities needed to be an excellent wingback. He has the engine and work rate, he's tenacious, not afraid of a tackle, he's tactically disciplined, and he's good receiving the ball under pressure. I think the big question mark is whether he can see the game in the right way. When to push forward, when to make runs behind, when to track back etc. I think the mental, intellectual part of the game will be the most challenging for him, and indeed anyone making the move.