From Roman Abramovich's first acquisition as Chelsea owner to witnessing the club he took to new heights claim an illustrious and seemingly initially elusive Champions League title, nine seasons had passed.
Champions of Europe in 2012, the Blues managed to claim another trophy the following year - the Europa League - and now, as the 2014 season nears it's climax, the fans dare to dream again yet they must first dispose of their quarter-final opponents at the Parc des Princes later today, Wednesday, as Paris Saint Germain are also vying for the Continent's biggest football prize at club-level.
Since the Qatar Investment Authority became the majority owner of Paris Saint Germain in 2011, then sole shareholder in 2012, it was only a matter of time before PSG, like Chelsea and Manchester City beforehand, embarked on a period of high-spending and aggressive recruitment before a formidable squad was at manager Laurent Blanc's disposal.
Some would argue that the playing roster in Paris is already near on world class, what with the likes of Zlatan Ibrahimovic, Edinson Cavani, Thiago Motta and Thiago Silva combining for an excellent spine.
However, there may still be some time before they are worthy of being in the same conversation as Real Madrid, Barcelona, Manchester City and Chelsea as Mourinho claims PSG are where they were ten years ago.
"When Mr Abramovich bought the club he was ready and keen and the football rules were open to that so the investment was important, probably the most important investment in that period," began Mourinho on the club's official website when comparing Chelsea of a decade ago to the present day PSG. "As a consequence of that Chelsea built year after year some of the best teams in European football.
"Paris is doing the same. Some people don't understand how because it looks like the Financial Fair Play is going to be in practice, but the reality is that in the last two years the investment was massive, the choice of the players fantastic. Leonardo [the former PSG sporting director] started a period of spending money but spending it on the right players and building the right team."
While it took some years before the Chelsea squad was settled. When the costly additions effectively supplemented the ever-present core of players such as John Terry and Frank Lampard, however, Mourinho has conceded that PSG already have a "complete" team.
"In this moment the team is very complete, it's full of very good players and the coach is good. The passion in this city is also good and the Parc de Princes is a beautiful place to play. Now they are dominant in France like Chelsea was dominant in England. The same way Chelsea were chasing the Champions League season after season, reaching semi-finals and finals and winning it, Paris is doing the same and now they want to win it."
While it may appear to be a backhanded compliment of sorts… that PSG and Chelsea are alike, just that the former are ten years behind their own progress, it is something that Zlatan Ibrahimovic actually agrees with.
"We are like they were at the start, eight years ago, but we also have players who have won the Champions League," he asserted.