BoyBrumby
Englishman
There is a precedent, but it was offered by the opposition rather than mandated: when Arsene offered t'Blades a Mulligan after (if memory serves) Kanu didn't give them the ball back when it was put out after a Blade injury and (again, IIRC) Overmars scored from the resulting play.A replay will never happen, but I don't think it would necessarily be unfair if it did.
Think Steve Bruce tried to call his players off the pitch for a little sook and cry too, so was pretty decent of Wenger, even if I am biased AF.