The 19-year-old joined the Dutch giants on a one-year loan and became the first Turkish international to ever score a hat-trick in the Eredivisie.
We took a look at how City fans reacted to Unal’s display on social media.
In case you missed the three goals here they are, all of which were pretty special as you can tell.
It was not just the fact he scored a hat-trick it was the manner in which he scored all three goals.
Widespread praise for the youngster!
Can’t disagree with that!
Rarely do you see such a fine hat-trick!
More impressively he managed to score all three goals within a 16 minute spell.
Hopefully the sign of things to come!
The Pep Guardiola effect is even rubbing off on loan players.
Unal is used to making history. He also holds the record for the youngest goalscorer in the Super Lig after finding the back of the net against Galatasaray aged 19.