The 17-year-old capped a fine first start at the Etihad by deflecting a John Stones effort home early in the second half.
But he and his City colleagues had to wait before referee Lee Mason finally awarded the goal after a long VAR check for a possible offside.
“I didn’t quite know how to react to scoring as I’ve not been in a game with VAR before,” Harwood-Bellis revealed.
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“But a couple of Port Vale players said I could be onside, so I got my hopes up and, fortunately, it was given.
“I said to John I was trying to move out of the way and then when it wasn’t offside I said that I meant it!
“But, to be honest, I did try and move out of the way... but I’ll take it”!
