Jose Mourinho says Real Madrid cannot afford the slightest error in their difficult Champions League group, and he predicts a tough battle with Manchester City.
"The difference between our group and the rest is that Madrid cannot make the slightest error," Mourinho said in an interview with sports daily AS published Thursday.
In the group phase, La Liga champions Real Madrid face Premier League champions Manchester City, Bundesliga champions Borussia Dortmund and Dutch league champions Ajax Amsterdam.
"It's not just that there are four champion clubs. Of the four champion clubs, three won in the three biggest leagues in Europe: La Liga, the Bundesliga and the Premier League," he said.
Manchester City would be a serious challenge, Mourinho warned.
"City are a team made to win the Champions League, built with that goal in mind. The investment they have made year after year is precisely with the aim of conquering the Champions League."
The Real Madrid-Manchester City clash would be tough, he said.
"It will be very hard. Hard for Real Madrid and hard for them, because Madrid is Madrid."
But the self-proclaimed "Special One" said Dortmund, too were a serious rival.
"They are double champions of Germany, an excellent team full of internationals but who also have the two best players of Poland," he said.
"And Ajax, you never know, they can give you a surprise."
Real Madrid coach Jose Mourinho says he won't make any comment on forward Cristiano Ronaldo's surprise declaration that he's unhappy at the club.
"I am not going to say anything about that", the Portuguese coach said when asked about his compatriot and star striker's troubles during an interview with sports daily AS published Thursday.
"I am ready to talk about everything. I have answered in depth and sincerely. But don't ask me about Cristiano. You have to understand. Please don't insist," Mourinho said.
The 27-year-old Ronaldo confessed to being "sad" when asked why he had not celebrated either of two goals he scored in Real Madrid's 3-0 win over Granada on Sunday.
Ronaldo has still not explained why he is unhappy, saying only on Sunday that it was professional, not personal. "People know why," he was quoted as saying.
The striker took to his Facebook page and Twitter on Tuesday to deny financial motives for his misery.
"That I am feeling sad and have expressed this sadness has created a huge stir," Ronaldo said. "I am accused of wanting more money, but one day it will be shown that this is not the case."