Real Madrid coach Carlo Ancelotti anticipates a tough test for his squad as they face Napoli in a UEFA Champions League group stage encounter.
Arsenal are having to endure travel delays ahead of the club's first away game in the Champions League in six-and-a-half years.
In a nail-biting UEFA Champions League opener, Real Madrid displayed their tenacity as they secured a dramatic 1-0 victory over Union Berlin.
In a UEFA Champions League clash, Real Madrid's Jude Bellingham delivered a stunning last-minute goal to secure victory over Union Berlin.
Bayern Munich beat Manchester United 4-3 in an incident-packed Champions League affair at the Allianz Arena where Harry Kane scored via a penalty.
Julian Alvarez shone as Manchester City came from behind to begin their Champions League defence with a comfortable 3-1 win over Red Star Belgrade.