Flick's tactical approach, featuring an extremely high defensive line, also seemed ripe for Mbappe and Vinicius to pillage with their pace.
Swedish prosecutors on Tuesday confirmed an investigation had been launched -- without naming Mbappe -- following an alleged rape at a plush Stockholm hotel on October 10.
Los Blancos take on their rivals without the French forward, ruled out for three weeks with a hamstring injury.
The format may be new, but few would bet against the winner staying the same.
The 2018 World Cup winner almost joined Caen as a teenager before eventually signing for Monaco.
The France captain, to his credit, was sublime in creating the goal that beat Austria 1-0, but his failure to score at a Euros will weigh heavily on a player who has found the net 12 times at World Cups, including a hat-trick in the 2022 final.
"The Euros is very important in our careers, but we are citizens first and foremost and I don't think we can be disconnected from the world around us," said Mbappe.
Mbappe, 25, verbally agreed to move to Real in February and then announced in May he would leave PSG at the end of the season.
PSG's decision to withhold Mbappe's salary is related to an agreement between the two parties made last year, at the start of the season, when the player accepted to waive part of a bonus due to him, the source said.
A source close to PSG told AFP that 31-year-old Neymar "no longer figures in the club or manager's plans" with the Brazilian immediately linked to Al-Hilal in the Gulf kingdom
After a summer of flux at the Parc des Princes filled with new arrivals and Lionel Messi's departure, it is the Mbappe stand-off that continues to dominate the headlines
Also missing against Lorient is Brazilian Neymar who is sidelined with a "viral syndrome".
Links of Kylian Mbappe to Real Madrid, rumours of Neymar returning to Barcelona have been the commonalities of the transfer market over the past few years. This summer, however, in addition to the aforementioned sagas, the emergence of one major entity -- the Saudi Pro League -- has taken the transfer market by storm.
The Paris Saint-Germain superstar has won France's player of the year award four times in a row and been Ligue 1's top scorer in five straight seasons, but his contract dispute with the champions has dominated headlines all summer
Klopp also dismissed reports of Liverpool looking to sign Kylian Mbappe on loan for the season as the Frenchman looks to leave Paris St Germain, where he is at an impasse with the club as he enters the final year of his contract
Mbappe was sensationally left out of the squad on the eve of PSG's departure for their Asian tour, casting doubt on his future at the French champions
Mbappe sent a letter to PSG last month stating that he had no intention of extending his contract, which expires in 2024
"The time of violence must give way to that of mourning, dialogue and reconstruction," the team said in a statement posted on social media by the Paris Saint-Germain superstar
"My stay in Paris started with a very difficult adaptation, much more than I expected, even though I had people I knew in the dressing room. It was difficult to adapt, the change, arriving late, not having a pre-season, adapting to the new club, the new way of playing, new teammates, the city...It wasn't easy for me or for my family," he told BeIN Sport