Entrants
1: UEFA Champions League path: The 32 girl teams of a clubs that competent for a UEFA Champions League organisation stage.
• Among a hopefuls in this trail are initial 2013/14 winners Barcelona as good as Chelsea, victors in 2014/15 and 2015/16, who did not validate to urge their pretension final season.
• Anderlecht, Atlético Madrid, Barcelona, Bayern München, Benfica, CSKA Moskva, Juventus, Manchester City, Paris Saint-Germain and Porto all keep adult their annals of entering all 5 editions of this foe (along with domestic champions trail hopefuls Ajax).
2016: watch Chelsea keep a Youth League title
• Benfica, runners-up in 2014 and 2017, have played some-more games (37) and scored some-more goals (89) than any other teams in this competition; Chelsea have available a many wins (23).
Group A: Benfica (POR), Manchester United (ENG), Basel (SUI), CSKA Moskva (RUS)
Group B: Bayern München (GER), Paris Saint-Germain (FRA), Anderlecht (BEL), Celtic (SCO)
Group C: Chelsea (ENG), Atlético Madrid (ESP), Roma (ITA), Qarabağ (AZE)
Group D: Juventus (ITA), Barcelona (ESP), Olympiacos (GRE), Sporting CP (POR)
Group E: Spartak Moskva (RUS), Sevilla (ESP), Liverpool (ENG), Maribor (SVN)
Group F: Shakhtar Donetsk (UKR), Manchester City (ENG), Napoli (ITA), Feyenoord (NED)
Group G: Monaco (FRA), Porto (POR), BeÅŸiktaÅŸ (TUR), RB Leipzig (GER)
Group H: Real Madrid (ESP), Borussia Dortmund (GER), Tottenham Hotspur (ENG), APOEL (CYP)
How Salzburg won a 2017 title
2: Domestic champions path: a domestic girl champions of a 32 best-ranked associations in a 2016 UEFA organisation fellow rankings (the same rankings used to confirm entrance to a 2017/18 UEFA Champions League and UEFA Europa League).
• If a organisation was authorised for both, they enter a UEFA Champions League path.
• A cavity in a domestic champions trail (including if a bar is instead authorised for a UEFA Champions League path, for instance Real Madrid) was filled by a domestic girl champion of a subsequent best-ranked association.
• Salzburg won a pretension final deteriorate after starting in a domestic champions path.
• For a initial time there are entrants from Albania, Latvia and Luxembourg.
Domestic Champions path: First turn draw…
Details: https://t.co/fu0g7oIHek #UYL pic.twitter.com/rCqvwstIPv
— UEFA Youth League (@UEFAYouthLeague) August 29, 2017
2017 semi-finals: Benfica hit out Madrid
Competition system
UEFA Champions League path
The 32 clubs entering around a UEFA Champions League will contest in groups with a same make-up and tie list as a comparison competition.
• The 8 organisation winners will swell true to a turn of 16.
• The 8 runners-up will go into a play-offs.
Domestic champions path
The 32 teams will contest in dual knockout rounds of home-and-away ties. There will be no seeding.
• The 8 teams remaining after a second turn will go into a play-offs.
Play-offs
The 8 domestic champions trail survivors will be drawn during home to a 8 UEFA Champions League trail runners-up in one-off ties to confirm a 8 remaining turn of 16 berths.
Knockout proviso and final
The knockout phase, starting with a turn of 16, will include of single-leg ties.
• The semi-finals and a final will be played on 20 and 23 Apr respectively during a Colovray Stadium conflicting UEFA’s Swiss domicile in Nyon.
More information can be seen in a competition’s official regulations.
2017 semi-finals: Salzburg jolt Barcelona
Season calendar
Pre-season draws
UEFA Champions League draw: 24 August, Monaco
Domestic champions trail pull (both rounds): 29 August, Nyon
Autumn matches
UEFA Champions League trail matchday one: 12/13 September
UEFA Champions League trail matchday two: 26/27 September
Domestic champions trail turn one, initial leg: 27 September
UEFA Champions League trail matchday three: 17/18 October
Domestic champions trail turn one, second leg: 18 October
UEFA Champions League trail matchday four: 31 October/1 November
Domestic champions trail turn two, initial leg: 1 November
UEFA Champions League trail matchday five: 21/22 November
Domestic champions trail turn two, second leg: 22 November
UEFA Champions League trail matchday six: 5/6 December
Knockout dates
Play-off draw: 11 December
Play-offs: 6/7 February
Knockout pull (round of 16 onwards): 9 February
Round of 16: 20/21 February
Quarter-finals: 13/14 March
Semi-final: 20 April, Nyon
Final: 23 April, Nyon
Still confused? Let this striking explain what happens…

Article source: http://www.uefa.com/uefayouthleague/news/newsid=2493301.html?rss=2493301+2017/18+UEFA+Youth+League+season+guide