Chelsea's academy goalkeeper Jamie Cumming was given an unexpected call-up to Antonio Conte's squad for the clash with Manchester United today - with Willian taking it upon himself to show the world the 17-year-old's initiation ceremony on the eve of the match.
Cumming's surprise inclusion in Conte's travelling party was confirmed on Friday night when Willian posted two Instagram stories of the shot-stopper standing up on a chair at the team hotel and singing a song in front of the entire squad.
The Belgian's absence means Asmir Begovic will start in goal for the Blues, with Eduardo on the bench and 17-year-old Cumming also in the squad.
Although the chance to travel to Manchester with the Chelsea first team for such a huge match would have been warmly welcomed by Cumming - a player who has risen through the club's academy ranks - what would probably have been less welcoming is having to undergo an initiation ceremony.
Willian filmed Cumming, who signed his first professional contract in January, singing in front of a giggling Chelsea squad before the first-team players decided to help the youngster out by joining in with him.
Watch Cumming's initiation ceremony in the video above.