Aaron Ramsdale was seen by All or Nothing viewers boasting to Bukayo Saka about getting a signed Cristiano Ronaldo shirt after the Arsenal's 3-1 home win over Manchester United in April last season.
Following the release of the latest episodes of the Amazon documentary, a clip of Ramsdale bragging about the shirt to his England and Arsenal team-mate has gone viral.
Arsenal won the game but the goalkeeper was denied a clean sheet by the Portuguese legend towards the end of the first half, although Ramsdale did not seem too bothered by that fact.
Following the game the Stoke-born keeper was seen walking into the Arsenal physio room, and after being asked if he picked up any shirts from their beaten opponents, he said: 'Just a Cristiano [Ronaldo] signed one.'
And his team-mate replied: 'What? Hahaha good joke, mate!'
Ramsdale then showed his new shirt off to the 20-year-old, before sauntering out the treatment room with his arm aloft.
Following Ramsdale's triumphant exit, Saka promised physios: 'Don't worry, I'm gonna get mine! I'm gonna get mine!'
It is a stark comparison to the former Bournemouth and Sheffield United shot stopper's reaction to conceding a late goal to Aston Villa in the 82nd minute of their October 2021 clash.
The game finished 3-1 - the same as the final result against Ronaldo's United - but Ramsdale was visibly irate at the late concession in an earlier episode of the documentary.
Victory over United is undeniably a bigger scalp than that of Villa, but the difference in the young keeper's attitude was plain for viewers to see six months after the win over the Midlands side.
In a break-out season that saw him receive his first England cap, usurp Bernd Leno's No 1 spot and keep 14 clean sheets in all competitions All or Nothing gives fans a behind-the-scenes view of the player's first term as an Arsenal player.
The final episodes of Amazon Prime Video's eight-part documentary were released on Thursday August 18, with the Gunners next in action on August 20 when they travel to the south coast to face Bournemouth.