Manchester United - Chelsea
There are no suspension worries for Manchester United. On the other hand, Chelsea’s Ramires, Fernando Torres, John Obi Mikel and Yuri Zhirkov all are facing a one-game suspension if they get booked against Manchester United in the second-leg of their quarter-final tie on Tuesday evening.
Shakhtar Donetsk - Barcelona
The Ukrainians could potentially be without a number of players should they manage to turn around their four-goal deficit against Barcelona and progress to the last four. Luiz Adriano, Olexiy Gai, Henrik Mkhitaryan, Dmytro Chygrynskiy, Darijo Srna and Yaroslav Rakitskiy all are just one just one booking away from suspension.
Chygrynskiy, though, is unlikely to feature against his old club as he is yet to attain full fitness, and Srna has been ruled out completely of the game in Ukraine.
Barcelona coach Pep Guardiola has no worries of missing key personnel for the first-leg of their potential semi-final tie against Real Madrid.
Tottenham – Real Madrid
Tottenham need a massive turnaround to progress to the last four and no player is a booking away from missing the first-leg of the semis.
For Real Madrid, though, it is a serious issue as no fewer than five players are in danger of sitting out the potential meeting with Barcelona at the Bernabeu.
Defenders Ricardo Carvalho, Sergio Ramos and Raul Albiol plus wingers Cristiano Ronaldo and Angel Di Maria have all already picked up two yellow cards in the competition.
Schalke – Inter
Schalke look set to reach the semi-finals of the Champions League after their imperious 5-2 victory over Inter in the first-leg of their quarter-final tie in Milan last week, but Jose Manuel Jurado and Klaas-Jan Huntelaar will have to be careful as they are a booking away from suspension. Huntelaar, though, is likely to sit out of the second-leg on Wednesday evening because of injury.
For Inter, only midfielder Thiago Motta risks suspension.