Napoli will lock horns with Austrian outfit Red Bull Salzburg in a crucial UEFA Champions League group stage fixture at San Paolo on Tuesday.
Liverpool will be hoping to keep pace with Group E leaders Napoli when they host Genk to Anfield in the UEFA Champions League on Tuesday.
Real Madrid will be looking for their first UEFA Champions League win of the season when they face Galatasaray at the Turk Telekom Stadium on Tuesday.
Juventus and Atletico Madrid will begin their UEFA Champions League campaigns when they go head-to-head at the Wanda Metropolitano on Wednesday.
Liverpool will begin the defence of their UEFA Champions League crown on Tuesday, when they take on Napoli in their first Group E clash at San Paolo.
Liverpool became European champions for the sixth time as they eased to a 2-0 victory over Tottenham Hotspur at the Wanda Metropolitano on Saturday.
Tottenham and Liverpool will lock horns on Saturday night in an all-English UEFA Champions League final at the Wanda Metropolitano Stadium.
Tottenham completed a dramatic comeback to beat Ajax on the away goals rule, with Lucas Moura scoring in the final minute to book their place in the UEFA Champions League final.
A place in the UEFA Champions League final will be up for grabs when Ajax welcome Tottenham Hotspur to the Johan Cruijff ArenA in the semi-final second leg.
Barcelona and Liverpool will hope to take a step closer to the next month's UEFA Champions League final when they meet at Camp Nou on Wednesday.