George McEachran, Conor Gallagher and Jamie Cumming are among the youngsters who are travelling to Hungary for Chelsea's Europa League match against MOL Vidi, Goal understands.
Manager Maurizio Sarri could name the trio on the bench for the encounter in Budapest, despite none of them having yet made their professional debuts for the club.
Sarri is set to ring the changes for the Blues' final Europa League group-stage match with one eye on the Premier League clash with Brighton at the weekend.
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Callum Hudson-Odoi and Ethan Ampadu could both start the game, with Sarri mindful of a hectic festive fixture list and the need to rotate.