Who could play who in the playoffs and round of 16 in the Champions League knockout stages?

With the conclusion of the Champions League group stages, we now have a clearer picture of who will face whom in the knockout stages. Who will Celtic and the English teams play?

After his Manchester City team defeated Club Brugge to extend their Champions League season, Pep Guardiola may have to return to Bayern Munich in the playoffs.

However, City will have a difficult time getting to the round of 16, as they and Celtic will have to play either Real Madrid or Bayern Munich for a chance to play Atletico Madrid or Bayer Leverkusen.

Guardiola declared, "Real Madrid or Bayern Munich - one is the king of the competition, the other one is maybe the second or third king of the competition," following the announcement of City's possible rivals.

Unai Emery's team will play one of Atalanta, Borussia Dortmund, Sporting, or Club Brugge in the round of 16, as Aston Villa narrowly missed out on a spot in the top eight after Atalanta lost to Barcelona and fell into the play-offs.

Liverpool and Arsenal were well aware that they will advance automatically.

Top-seeded Liverpool will now play either Paris Saint-Germain, Benfica, Monaco, or Brest.

Arsenal's potential opponents in the round of 16 may be either AC Milan, PSV, Feyenoord, or Juventus, two of the biggest teams in Serie A.

Who might the British teams face in the round of 16 and who will they play in the next round?

Liverpool (at number one)

Round of 16: against either Brest (18th), Monaco (17th), Benfica (16th), or PSG (15th).

Arsenal (number three)

Round of 16: against Juventus (20th), Feyenoord (19th), PSV (14th), or AC Milan (13th).

Aston Villa (number eight)

Round of 16: against Club Brugge (24th), Sporting (23rd), Borussia Dortmund (10th), or Atalanta (9th).

Celtic (number 21)

Playoff knockout matchup: Real Madrid (12th) or Bayern Munich (11th).

Round of 16: either Bayer Leverkusen (6th) or Atletico Madrid (5th).

Manchester City, which is ranked number 22

Playoff knockout matchup: Real Madrid (12th) or Bayern Munich (11th).

Round of 16: either Bayer Leverkusen (6th) or Atletico Madrid (5th).

Why two all-British quarterfinals could occur
The last-16 draw in February will reveal the precise structure of the competition after the play-offs.

However, there is a possibility that two all-British quarterfinals will occur.

Liverpool and Aston Villa may end up playing each other in the round of eight if they win their final-16 matches after finishing first and eighth, respectively.

Similarly, if Celtic and Manchester City win their play-offs and defeat Atletico Madrid or Bayer Leverkusen, it may lead to a quarterfinal matchup with Arsenal.

Which clubs have advanced to the next round?
Verified in the round of sixteen

Atletico Madrid, Liverpool, Barcelona, Arsenal, Inter Milan, Bayer Leverkusen, Lille, and Aston Villa.

Verified in the playoffs' knockout phase

Real Madrid, AC Milan, PSV, PSG, Benfica, Monaco, Brest, Feyenoord, Juventus, Celtic, Man City, Sporting, Club Brugge, Atalanta, Borussia Dortmund, and Bayern Munich.

Eliminated Teams

Young Boys, RB Leipzig, Girona, RB Salzburg, Slovan Bratislava, Bologna, Crvena Zvezda, Sturm Graz, Dinamo Zagreb, Stuttgart, and Shakhtar Donetsk.