Ronaldo doubtful for the match in Dortmund

The best scorer of Real Madrid Cristiano Ronaldo left the training with a knee injury and it is uncertain whether they will be able to play at the quarter-final second leg match of the Champions League against Borussia Dortmund. Ronaldo is due to problems with the knee missed the league game against Spanish Primere Sociedad on Saturday , while his new injury brought a " headache" coach Carlo Ancelotti , despite the Real against Borussia defend a convincing lead in the first match in Madrid ( 3-0). Ancelotti said on Sunday he would not take the plunge with their best players and will leave it out of the team if not a hundred percent ready , and today's new injury is likely to affect the Portuguese did not run out on the field Westfalen stadium . " Cristiano always wants to play , and I want to play , but he's a professional and knows whether it is capable of at this moment . We still have to wait , do not rush to a final decision . Anyway , we do not risk a serious breach ," said Ancelotti has told reporters in Dortmund. Ronaldo has scored this season for Real Madrid as 45 goals in all competitions , and lacks only one to break the record of the Champions League by the number of hits in a single season . The match between Real Madrid and Borussia Dortmund game is on Tuesday from 20:45 hours .