Not firmly, although that says as much about my crap football memory and the relatively small number of games I actually see as it does anything else.
I'd consider it for Trossard at Anfield last season, given:
He scored 3 goals (I'm not wedded to the "has to score 3 or more" thing...
There'd have to be something particularly special in the performance or circumstances to justify a 10.
I'd not put a number to it or particularly define it, because as we know from Spinal Tap, once you go to 10 you've nowhere else to go.