Chelsea have enjoyed some epic battles with Barcelona over recent years, but lovers of sub-plots and drama will be crossing their fingers and praying that the Blues meet Real Madrid in this season's Champions League knockout stages.
It may come as a surprise to know that Chelsea and Real Madrid have never gone head-to-head in the Champions League - so it's high time they were drawn to face each other.
The two clubs last faced off in the 1998 UEFA Super Cup, which Chelsea won 1-0 thanks to a late goal from Gus Poyet.
Seventeen years earlier they played in the final of the European Cup Winners Cup - and again it was the Blues who triumphed.
But those matches would surely pale in comparison to a two-legged Champions League blockbuster of a tie involving the divisive Jose Mourinho.
The Portuguese coach left Real Madrid under a dark cloud at the end of last season after falling out with all but two or three of his playing squad.
Quite how he managed to go from joyously celebrating a record-breaking La Liga title with the same group of players who would eventually despise him less than a year later remains a mystery, but it means that Mourinho's return to the Bernabeu would be front-page news in both England and Spain.
Mourinho is at his entertaining best when he's emotionally charged. Just look back at the hilarious manner in which he celebrated after knocking Barcelona out of Europe while managing Inter Milan at the Camp Nou in 2010.
The full-time whistle went, prompting an ecstatic Mourinho - who previously worked as a translator at Barcelona - to famously run onto the pitch with his finger in the air - much to the annoyance of the Catalans, who turned on the sprinklers and blasted out the club's anthem over the stadium's speakers.
Expect similar scenes if Mourinho managed to get one over Real Madrid, who left a bad taste in the Portuguese's mouth after last season. He will be in no mood to forgive and forget.
Imagine the mind games, the comments from not only the Chelsea boss but also the likes of Iker Casillas, who is still suffering from the fallout of Mourinho's tenure at the Bernabeu.
It would be glorious, while the on-pitch action would be pretty special, too.
Let's hope they both qualify for the latter stages and give us something special to remember from the 2013/14 campaign.