That injury list is like a joke. Real Madrid is really unlucky with injuries for a long time. 
They had the same problem in the previous season as well. That's why Ancelotti should have signed an extra defender this summer.
He just said that he was satisfied with the number of options he had in the area. I wonder what he is thinking about this now. I assume Carvajal will be Rüdiger's mate there temporarily. I hope this temporary time won't be too long. Otherwise I think Real Madrid would have even bigger problems in the Champions League. Even against smaller teams I mean. Teams with good counter-attack skills can catch them off their guard.
They had the same problem in the previous season as well. That's why Ancelotti should have signed an extra defender this summer.He just said that he was satisfied with the number of options he had in the area. I wonder what he is thinking about this now. I assume Carvajal will be Rüdiger's mate there temporarily. I hope this temporary time won't be too long. Otherwise I think Real Madrid would have even bigger problems in the Champions League. Even against smaller teams I mean. Teams with good counter-attack skills can catch them off their guard.
With many of Real Madrid's main players injured and a poor start to the season in La Liga, it could be a factor in the team's difficult task to play well in the Champions League. Moreover, with the new format and the more demanding schedule, despite Ancelotti's efforts to keep the team consistent by maximizing the rotation of players, but it still seems that Real Madrid this season does not have as good a chance as the previous season in the Champions League.
Thus, the opportunity to fail will be something that might be worried for Mbappe too because joining Real Madrid is at least to make Mbappe easy to get the Champions League trophy. But anyway, the reality remains a difficult task considering many of the main players were injured earlier this season. But, ofcourse, they can also recover so perhaps Real Madrid will still be able to rise, and will still be a serious threat to other teams.