During the 1-1 draw, Macey pulled off a superb instinctive save to deny Benjamin Bourigeaud.
“I saw the shot late and it was coming through bodies as it was cleared from a corner, but I managed to see it in time to get my feet right," he told Arsenal Player. "Then I was a bit lucky in the end as I threw my hand at it and it went over.
"It was a good feeling and it gives you that bit of confidence when it's so early in the half. It was a nice moment to have, especially in such a high-tempo game. It was a good test and good for us younger lads to play a proper game like that."