AFP, Madrid :Real Madrid coach Carlo Ancelotti insisted he was not concerned by an injury that forced Cristiano Ronaldo to be withdrawn 10 minutes from time as his side edged towards the Champions League semi-finals with a 3-0 win over Borussia Dortmund on Wednesday. The Portuguese scored a record-equalling 14th Champions League goal of the season to all but seal Real’s place in the last four after first-half strikes from Gareth Bale and Isco had put Los Blancos in command. However, uncharacteristically, Ronaldo didn’t finish the 90 minutes as he was forced off by a minor knee injury that has bothered him for the last couple of weeks. “We will wait and see what the problem is, but at the moment we are not worried. We are not thinking about giving him a rest,” said Italian Ancelotti, suggesting Ronaldo will start Saturday’s crucial La Liga visit to Real Sociedad. Ancelotti insisted that his side still have work to do next week at the Westfalenstadion to progress to the last four, but was enthused by the balance his side showed between defence and attack. “We know Dortmund will do everything to come back, that is normal.