Marseille head coach Andre Villas-Boas believes Paris Saint-Germain's spending power means they are operating in "another league" from their domestic rivals in France.
The Parisian giants have dominated Ligue 1 since they were taken over by Qatar Sports Investments in 2011, winning six out of a possible eight league titles.
They are also responsible for paying the two biggest transfer fees of all time, shattering the record when they spent €222million to get Neymar from Barcelona in 2017, while Kylian Mbappe cost €135m from Monaco.
Unsurprisingly, they have wasted little time in stamping their authority on the league again this season, racing into a five-point lead at the summit after 10 games.
Marseille travel to Parc des Princes for Le Classique on Sunday but Villas-Boas says the game matters little to him, given their opponents' financial muscle.
"We're going to have a completely different game against a team that, for me, is not part of this championship because of the investments they've made over the years," he told the media after his side's 2-0 win over Strasbourg on Sunday.
"We're going to try to play the game for the game's sake, but it's a game that doesn't mean much to me. PSG-Marseille, or Marseille-PSG, for me, this is an opportunity to try to do something.
"We obviously dream of winning, but it's a team from another league. It was a Classique in the past. But we're going to Paris; we're going to think of a strategy to play. The most important thing is to have possession of the ball there."
Marseille are fourth in Ligue 1, having picked up 16 points from their opening 10 games.