The Arsenal midfielder took a picture with the 19-year-old, with whom he holds quite a resemblance.
Not only are both capable of raiding forward with the ball in an Arsenal shirt, as well as scoring spectacular goals, the duo even look distinctively similar.
So much so that Oxlade-Chamberlain has taken to Twitter to joke that the 19-year-old is his 'twin.'
Whether the two will be playing alongside one another this season remains another matter, however, with the Gunners reportedly looking to loan Gnabry out this term.
According to the Daily Mirror, Aston Villa are the latest club to join the hunt for the German's signature on a temporary move, with space in Arsene Wenger's first team becoming harder and harder to find.
Alexis Sanchez was brought to the Emirates Stadium for a reported £35 million fee this summer, while Theo Walcott is slowly returning to fitness, adding to the existing wealth of riches at the north London side.
If Gnabry does leave on loan, of course, it will mark a key difference between himself and his 'twin' Oxlade-Chamberlain, who has not left Arsenal on any basis since signing from Southampton in 2011.
However, with both men so young (the Ox is just 20), they will likely find themselves playing alongside each other again before long.
Should Arsenal loan Gnabry out this season?