I don't think many of even assume it's going to be a win, do we? Our recent record against Palace (one win in 7) doesn't give much cause for optimism, and you can forget league position in a game like this.
IF he scores, his reaction will depend on the state of play at the time and also which end. I suspect that a last-minute winner or point-saver in front of the North Stand might get a different reaction from a late consolation at the other end ...