The reigning Liga champions must overcome Manchester City, Ajax and Borussia Dortmund in order to qualify for the knockout stages and the Los Merengues' manager has admitted it's a tough draw.
So tough, in fact, that the Portuguese does not see the value in trying to win the group, believing qualification is acceptable from such difficult circumstances.
"We are talking about a group with the four league champions of four major countries, especially City and Borussia Dortmund," Mournho told Uefa.com
"And look at Ajax's history. The aim isn't to win six games, but to qualify. The points will be shared out a little."
On the chance to finally secure the coveted 10th European Cup in the club's history, Los Blancos boss took the chance to lower expectations surrounding his players.
"Real Madrid is the club of the European Cup, looking at their history and the statistics. The only way of seeking the 10th is to play well, and be highly motivated to win.
"But football is beautiful because it's unpredictable and because sometimes the best team doesn't win."