Champions League group stage: what every team needs to go through

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As Matchday 6 of the group stage completed on Wednesday, we finally know who's booked a place in the last-16 and who will drop into the Europa League. However, the weather-related postponement of Atalanta vs. Villarreal means there's still one last-16 spot up for grabs in Group F, with the game to be played at 1 p.m. ET / 6 p.m. BST on Thursday, Dec. 9.

Group winners and runners-up qualify for the Champions League round of 16, with third-placed teams dropping into the Europa League preliminary knockout round. Teams that finish bottom are eliminated from Europe.

QUALIFIED FOR UCL ROUND OF 16 (15/16): Ajax, Atletico Madrid, Bayern Munich, Benfica, Chelsea, FC Salzburg, Inter Milan, Juventus, Lille, Liverpool, Manchester City, Manchester United, Paris Saint-Germain, Real Madrid, Sporting CP

DROPPED INTO UEL (7/8): Barcelona, Borussia Dortmund, FC Porto, FC Sheriff, RB Leipzig, Sevilla, Zenit St Petersburg

ELIMINATED FROM EUROPEAN COMPETITION (7/8): AC Milan, Besiktas, Club Brugge, Dynamo Kiev, Malmo, Shakhtar Donetsk, Young Boys

- When is the UCL RO16 draw?

Dec. 9: Atalanta vs. Villarreal

Manchester United: Have qualified for the round of 16 as group winners.

Villarreal: Must avoid defeat at Atalanta to qualify for the Champions League knockout rounds, and are guaranteed at least a place in the Europa League.

Atalanta: Have to win at home to Villarreal to go through in the UCL, though a point would also earn a place in the Europa League.

Young Boys: Are out of the Champions League and defeat at Manchester United means they have no hope of the Europa League.