There are clear features of his game which are impressive. He's got impeccable work-rate and good awareness of his surroundings, whether that's dragging opposition players out of their comfort zones or darting into the box to make a goal-scoring opportunity.
But he also has clear sides to his game that he needs to (really) heavily improve upon.
Off the bat, he's not great 1v1. He doesn't seem to show any willingness or confidence in going up against his opponent, more so when going down the side.
His link-up play is substandard, especially down the sides, though I think Dalot and AWB can certainly help him more in that regard by offering a greater, consistent outlet.
He has a frustrating knack of slowing our game down on the counter which is, frankly, bizarre. More so when you have Rashford and Bruno taking full advantage of the space in front of them while keeping up that intensity. Needs to be more eager and direct.
It doesn't seem like he has particularly great stamina. This is evident usually in the 2nd half of games when he gets annoyingly lax with the ball. Sloppiness comes into his game. There's a distinct lack of off the ball movement. This is something that will improve with in time though.
Overall I give Antony a early season rating of 6/10.
His negatives, or elements that he needs to improve upon, are clearly evident to anyone who has eye-balls but he does have the right attitude when it comes to team-work and work rate.
He does hold the width of the team, to some extent. He is always a outlet on the right hand side. He doesn't drift much, which is to his credit, especially when you have certain players who run all over the place. And he does have a goal in him but we need to see much more from him on the creative side. Maybe having a archetypal number 9 leading from the front would help in in that regard. Gives him a focal point to aim for when he invariably cuts inside.
Edit: Also, don't compare Antony to Valencia. The Ecuadorian was twice the player.