Cristiano Ronaldo is on his way back to Manchester United after a Champions League draw that features more than a few eye-catching games, beginning next month.
United must overcome tough Italian and Spanish opponents, having been matched with Ronaldo's new club Juventus and the reviving Valencia.
Swiss side Young Boys complete the group, but it is Ronaldo's return to United that will catch the imagination.
Portugal's superstar is seeking a fourth consecutive European Cup.
He won the Champions League with United in 2008, where he spent six years before his move to the Bernabeu in 2009, and is sure of an emotional welcome back to Old Trafford.
Jose Mourinho must also overcome a strong La Liga side, Valencia, making their Champions League return under coach Marcelino. Liverpool and Tottenham Hotspur are facing demanding fixtures.
Elsewhere, holders Real Madrid - aiming for a fourth successive title - will be happy with their draw, as will English champions Manchester City and German title-holders Bayern.
So who will make it through to the knockout stage?
Group A: Atletico Madrid, Borussia Dortmund, Monaco, Brugge. Who will go through? 1. Atletico Madrid; 2. Borussia Dortmund.
Europa League holders Atletico will be desperate to win as the final is being staged at their stadium but Diego Simeone's team have been handed a tough start. Borussia Dortmund have a strong European pedigree and are dangerous.
Group B: Barcelona, Tottenham, PSV Eindhoven, Inter. Who will go through? 1. Barcelona; 2. Tottenham.
The group has serious pedigree, but both teams should progress comfortably. Barca will be favourites - Ernesto Valverde's team still possess awesome firepower in Lionel Messi, Luis Suarez, Philippe Coutinho and Ousmane Dembele - but Spurs showed last season, when topping their group, that they can beat the best on the big stage.
Group C: Paris Saint-Germain, Napoli, Liverpool, Red Star Belgrade. Who will go through? 1. PSG; 2. Liverpool.
The Reds were fearful of a tough group and their nightmare became reality as Jurgen Klopp's men were paired with PSG and Napoli. PSG, with Kylian Mbappe, Neymar and Edinson Cavani, will be favourites but Napoli, under Carlo Ancelotti, can beat anyone. Liverpool's run to the final last season will give them belief, but it will be tough.
Group D: Lokomotiv Moscow, Porto, Schalke, Galatasaray. Who will go through? 1. Schalke; 2. Porto.
This group might lack box-office glamour, but it gives each participant a clear route into the knockout stages.
Group E: Bayern Munich, Benfica, Ajax, AEK Athens. Who will go through? 1. Bayern Munich; 2. AEK Athens.
Bayern will expect to cruise into the Round of 16 and it will take a momentous shock for the German champions to miss out, but the battle for second ensures Group E will be one of the most unpredictable.
Group F: Manchester City, Shakhtar Donetsk, Lyon, Hoffenheim. Who will go through? 1. Man City; 2. Shakhtar Donetsk.
City's ambition will not have been dented by this draw, which has handed Pep Guardiola's team a straightforward route through.
The race for second is likely to be the only source of excitement, with Shakhtar's recent pedigree giving them the edge.
Group G: Real Madrid, Roma, CSKA Moscow, Viktoria Plzen. Who will go through? 1. Real Madrid; 2. Roma.
With two of last season's semifinalists - Real Madrid and Roma - the battle for top spot and the race for third are likely to be the tale of this group.
Group H: Juventus, Manchester United, Valencia, Young Boys. Who will go through? 1. Juventus; 2. Valencia.
Ronaldo facing United with Juventus will be the main draw, but expect a three-way fight in this group...