|Referee: Petr Ardeleanu (CZE) – Stadium: Caixa Futebol Campus, Seixal (POR)|
|Referee: Robert Hennessy (IRL) – Stadium: Chelsea Football Club Training Ground, Surrey (ENG)|
|Referee: Rade Obrenovic (SVN) – Stadium: Tre Fontane, Rome (ITA)|
|Referee: Mads-Kristoffer Kristoffersen (DEN) – Stadium: Mini Estadi, Barcelona (ESP)|
|Referee: Keith Kennedy (NIR) – Stadium: Leigh Sports Village, Leigh (ENG)|
|Referee: Alan Mario Sant (MLT) – Stadium: Olympiacos FC Training Centre, Piraeus (GRE)|
|Referee: Alexander Harkam (AUT) – Stadium: Strathclyde Homes, Dumbarton (SCO)|
|Referee: Mykola Balakin (UKR) – Stadium: FC Bayern Campus, Munich (GER)|
|Referee: Aleksandrs Anufrijevs (LVA) – Stadium: FC Metalist Training Ground, Vysokiy (UKR)|
|Referee: Ferenc Karakó (HUN) – Stadium: Športni park, Lendava (SVN)|
|Referee: Krzysztof Jakubik (POL) – Stadium: Stadion am Cottaweg, Leipzig (GER)|
|Referee: Glenn Nyberg (SWE) – Stadium: Woudestein, Rotterdam (NED)|
|Referee: Laurent Kopriwa (LUX) – Stadium: Estadio Alfredo Di Stefano, Madrid (ESP)|
|Referee: Adrien Jaccottet (SUI) – Stadium: Centro de Treinos e Formação Desportiva, Vila Nova de Gaia (Porto) (POR)|
|Referee: Bryn Markham-Jones (WAL) – Stadium: Tottenham Training Centre, Enfield (ENG)|
|Referee: Thorvaldur Árnason (ISL) – Stadium: Prenton Park, Birkenhead (ENG)|
Last updated: 11/12/2017 12:15 CET
In the expanded UEFA Youth League, the Under-19 teams of the UEFA Champions League entrants will be joined by the youth domestic champions of 32 nations.
UEFA Champions League path
The 32 clubs entering via the UEFA Champions League will compete in groups with the indentical make-up and fixture list as for the senior competition. The eight group winners will progress straight to the round of 16 while the eight runners-up will go into the play-offs.
Domestic Champions path
The 32 teams will compete in two knockout rounds of home-and-away ties to produce eight survivors, who will progress to the play-offs.
The eight Domestic Champions path survivors will be drawn at home to the eight UEFA Champions League path runners-up in one-off ties to decide the eight remaining round of 16 berths.
Knockout phase and final
The knockout phase, starting with the round of 16 will consist of single-leg ties, meaning a maximum of ten matches for any team, with the semi-finals and final played in the form of a final tournament at the Colovray stadium, Nyon, Switzerland. There will be no third-place play-off game.
More information can be seen in the competition's official regulations.