Chelsea keeper Petr Cech will have a scan on a leg injury after being forced off at half-time during the Blues' victory at Everton.
Juventus striker Nicklas Bendtner is facing up to three months on the sidelines after suffering a leg injury.
Barcelona's defensive concerns have deepened with the news that Adriano will be out for three weeks after suffering a leg injury oin the win over Celta Vigo.
Newcastle United striker Demba Ba could be sidelined for Sunday's trip to Liverpool after suffering a leg injury in the 2-1 win over West Brom at the weeekend.
Arsenal midfielder Aaron Ramsey is hoping to use his deft goal against Olympiacos as motivation to regain the form that earned him a contract with the Gunners in 2008.
Hatem Ben Arfa has stepped up his training programme but Newcastle manager Alan Pardew has moved to rein in expectation by insisting the winger is a month away from a return.
David Luiz's free-kick deep in injury-time handed Chelsea a 2-1 first leg Europa League semi-final win over FC Basel, while the other tie saw Fenerbahce beat Benfica 1-0.
Inter Milan's injury crisis deepened still further as they lost midfielders Esteban Cambiasso and Fredy Guarin to leg injuries during the Copa Italia semi-final defeat to Roma on Wednesday.
Malaga are set to make a formal complaint to UEFA about the performance of referee Craig Thomson during their 2-1 Champions League quarter-final second leg loss at Borussia Dortmund on Tuesday.
Franck Ribery will miss Bayern Munich's Champions League last-16 second leg against Arsenal due to an ankle injury.
Tim Krul could be out for up to five weeks with an ankle injury he picked up in Newcastle's Europa League last 32 second-leg win against Metalist Kharkiv.
Celtic captain Scott Brown is out of the Champions League last-16 second-leg tie with Juventus due to a hip injury.
Aaron Ramsey says his injury nightmare is behind him and he is now ready to find the form which can help lead Arsenal to European success.
A Barcelona surgeon has revealed that striker David Villa risked amputation after breaking his leg during the 2011 Club World Cup.
Manchester City midfielder Jack Rodwell has been ruled out of England Under-21s' Euro 2013 play-off second leg against Serbia on Tuesday due to a hamstring injury.