Ten Hag felt it was the Brazil attacker's best performance in a United shirt.
"I know he is capable it (of playing like he did vs Chelsea)," Ten Hag told MUTV.
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"I've seen it so often when I was manager at Ajax but we haven't since this (at United).
"Maybe in the start, we have seen glimpses in the first three games where he scored three goals. But after that, incidentally, like against Barcelona last season where he scored the winning goal. But he's capable of it. On Thursday night, I saw the Antony I want to see."