CSKA Moscow are expecting a tough tie against what coach Viktor Goncharenko says is the best Manchester United side since Sir Alex Ferguson retired.
Henrikh Mkhitaryan says Manchester United are among the contenders to win this season's Champions League.
Man United manager Jose Mourinho says Marouane Fellaini was "lucky" to avoid serious injury following a challenge from Shane Long against Southampton.
Wednesday's mouth-watering Champions League clash between Paris Saint-Germain and Bayern Munich pits two teams with rather different problems.
Paris Saint-Germain coach Unai Emery says he has spoken with both Neymar and Edinson Cavani ahead of the Champions League meeting with Bayern Munich.
Chelsea's disciplinary record is poor this season and the loss of composure has surprisingly come from some of the most experienced stars.
Once touted as the next big thing, William Carvalho's career has stagnated. However, a big performance against Barcelona would continue his revival.
Mathieu, 33, who spent three seasons at the Camp Nou, left for Sporting Lisbon on a free transfer.
The farcical situation between Edinson Cavani and Neymar is an unwanted sideshow as PSG look to beat Bayern to get their season on track.
As unlikely as it may sound, it seems Manchester United boss Jose Mourinho has become the latest member of Liverpool's most well-known fans' group.
Having drawn with Monaco in their first-ever Champions League match, Leipzig are embarking on their first away fixture in the competition.
It's not quite make-or-break but PSG vs. Bayern is huge for Unai Emery, who is dealing with the stress of Cavani vs. Neymar and a tough dressing room.
Ronaldo has yet to score in La Liga this season, having missed the first four games through suspension.
Spartak Moscow coach Massimo Carrera says he has spoken to Chelsea boss Antonio Conte ahead of his side's Champions League encounter with Liverpool.
"Borussia Dortmund vs. Real Madrid is, already, a 24-karat European Clasico. Make no mistake about it." Graham Hunter previews Tuesday's game.
Cesc Fabregas says Chelsea manager Antonio Conte and Atletico Madrid coach Diego Simeone are both similar in how they drive their teams on.
Celtic fans risk arrest if they turn up for Wednesday's Champions League clash with Anderlecht without a ticket, according to the Belgian club.
The head of Russian football's security committee has warned Manchester United and Liverpool supporters against causing trouble this week.
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