Roberto Firmino, Joe Gomez and Joel Matip believed they were speaking to a FIFA representative as they got sight of their personal statistics for the new season.
In fact, Oxlade-Chamberlain was the man behind the mic – with his voice concealed – and asking the probing and unusual questions of his fellow Reds and their newest ratings.
Take a look at how the prank unfolded below.
Pre-order your game of FIFA 22 here now.