The youngster was handed his Celtic debut in the rout of Motherwell.
Ronny Deila handed the youngster his debut as he came on as a 75th minute substitute in the 7-0 victory.
By doing so, he became the club’s youngest ever player to feature in a competitive match, at 16 years and 71 days.
It proved to be a debut to remember as he managed to get himself on the score sheet and add to his side’s tally.
It is a moment he is unlikely to forget in a hurry, and he says his rise to the first-team has been phenomenal.
“I’ve been dreaming since I’ve been a wee boy about this, so for it to fall in place with my first touch – I can’t describe the feeling,” he told celticfc.net.
“I didn’t think I’d get my first-team debut within three months of the Valencia game, never mind score, so it’s just phenomenal.”
Celtic’s attention now turns to the future and principally who will be the next manager at the club when Deila departs.
A number of options have already been touted as potential candidates, with the job sure to attract several big names this summer.
Whoever that is will be sure to assess the current squad, and Aitchison will be hoping to be a part of their long term plans after this impressive debut.