UEFA rules dictate that from the first match in the group stage, players and team officials are suspended for the next match in the competition after three cautions.
Norwegian striker Haaland was booked in both legs of Borussia Dortmund‘s last-16 tie against Sevilla, including one caution for unsportsmanlike behaviour after celebrating in goalkeeper Bono’s face.
Erling Haaland leads a list of high-profile players who could miss the Champions League semi-final first leg
Haaland was booked for celebrating in Sevilla goalkeeper Bono’s face and would miss the first leg should Borussia Dortmund progress
Brazil star Neymar is also at risk of suspension after being cautioned twice in the group stages for Paris Saint-Germain in home games against Manchester United and RB Leipzig.
They could now miss the first leg of the last four if they are booked in their quarter-final second legs against Manchester City and Bayern Munich respectively.
Bundesliga outfit Dortmund trail Pep Guardiola’s men 2-1 after Phil Foden’s last-minute strike, but PSG head into their home return leg having claimed a 3-2 win at the Allianz Arena thanks to a double from Kylian Mbappe.
Yellow cards are then reset when the semi-finals kick off on 27 and 28 April respectively.
Neymar was booked in group-stage home games against Manchester United and RB Leipzig
Haaland’s club team-mate Emre Can is the only other Dortumd player who risks suspension, but three of Neymar’s fellow PSG stars – Idrissa Gueye, Layvin Kurzawa and Marco Verratti – risk missing out.
Liverpool meanwhile have a host of players who could miss their next European encounter through suspension, the most of any side left in the competition.
Trent Alexander-Arnold, Sadio Mane, James Milner and Georginio Wijnaldum will all miss out if they are booked in their bid to overturn a 3-1 deficit against Real Madrid, while injured captain Jordan Henderson is also listed.
Madrid themselves will be hoping left-back Ferland Mendy and Federico Valverde are not shown a yellow card at Anfield too.
Trent Alexander-Arnold is one of four Reds stars who could miss out if they beat Real Madrid
Sadio Mane (left) and Georginio Wijnaldum (right) could also miss out if they progress
Premier League rivals Chelsea and Man City have two players who could be ruled out, with Blues duo Hakim Ziyech and Mateo Kovacic and City pair Fernandinho and Joao Cancelo one booking away from suspension.
Thomas Tuchel’s men are favourites to head through having secured a 2-0 victory last week in Porto, who only have former Newcastle midfielder Chancel Mbema at risk.
Bayern Munich trio Jerome Boateng, Lucas Hernandez and star man Joshua Kimmich could also miss the first leg of the last four if they are booked against PSG.
The second legs of the semi-final take place on May 4 and 5, before the final takes place in Istanbul on Saturday May 29.
Chelsea duo Mateo Kovacic (left) and Hakim Ziyech will be suspended if they are booked
This post first appeared on dailymail.co.uk