Money, money, money – Roman Abramovich took control of Chelsea in 2003 and by 2005, with many millions spent, the club had won the English Premier League, while it claimed the Champions League in 2012 with victory over Bayern Munich.
Chelsea MK II – Qatar Investment Authority bought a majority stake in PSG in 2011, with Nasser Al-Khelaifi appointed as president. Many millions of dollars have been invested since then, and as a result the club looks set to win its second consecutive French Ligue 1 title this season.
The Special One – Abramovich brought manager Jose Mourinho to Chelsea in 2004, and the Portuguese went on to guide the club to two English Premier League titles, one FA Cup and two League Cups before leaving in 2007. He returned last summer and will be desperate to secure a third Champions League crown, following wins with Porto and Inter Milan.
Catching the eye – Former France and Bordeaux manager Laurent Blanc was appointed PSG boss last summer and is enjoying an impressive maiden season. The French Ligue 1 title looks to be tied up, while a French Coupe de la Ligue final is on its way as well as the Champions League quarterfinal against Chelsea.
I am Zlatan – Zlatan Ibrahimovic has played a huge role in PSG's recent successes after joining the club from AC Milan in 2012. This season alone, the Sweden international has scored 25 goals in 30 league games and 10 in seven in the Champions League.
Stuck in a rut – Fernando Torres, meanwhile, has struggled to fulfill his $80 million price tag since joining Chelsea from Liverpool in 2011, scoring just nine goals from 32 appearances this season.
'Captain, Leader, Legend' – John Terry has seen it all at Chelsea, having made his debut in 1998 -- nearly five years before Abramovich arrived. While his behavior on and off the pitch has often been questioned, the club captain has won a wealth of trophies over the years.
Captain Marvel – Like Ibrahimovic, Thiago Silva also joined PSG from AC Milan in 2012. The defender has gone on to become club captain, while he could also be the man to lift the World Cup for Brazil on home soil this summer.