Yusuf Demir made his competitive Barcelona debut in their 1-1 draw at Athletic Bilbao on Saturday.
During the match against Athletic Club at San Mames, Demir came off the bench to make his senior debut, becoming the youngest foreign player to play his first game for the club since Lionel Messi himself.
Demir is just 18 years and 80 days old, but he impressed in patches on debut, being introduced on the left side of attack in place of Martin Braithwaite.
Los Cules may have picked up a bargain, loaning Demir in from Rapid Vienna with the intention of using him with Barcelona B, negotiating a 10 million euro purchase option with Rapid Vienna.
His rapid progression has stunned the Catalan club and it makes that purchase option look like an exquisite piece of business.