The starlet showed just why in a 1-0 win for Arsenal's under-18 side against Newcastle.
He netted the only goal of the game, curling the ball over the opposition goalkeeper from the edge of the box after cutting inside.
The 17-year-old winger has made quite the impression this year. As well as being a regular for the under-21 side, he has played in the League Cup and the Premier League.
It was just a cameo role against Norwich back in the Autumn, but it bodes well for the future; the last youngster for Arsene Wenger to promote so young was Jack Wilshere.
It may still be that Arsenal elect to send Gnabry on loan to a Football League club in the coming months, to boost his development further.
As he has shown already, he is clearly one to watch.
Check out his goal below...
What do you think of Gnabry? How good can he be?