Liverpool manager Rafael Benitez has warned his players of losing their heads and think that they are already in the UEFA Champions League semis after winning 3-0 away to PSV. "We know we are close but in football you have to stay focused for every match. There must be no room for complacency now. We must take the second leg seriously and play a proper match," he told BBC Sports. "If we can keep them quiet for the first 45 minutes (in the second leg), then maybe we can start thinking of reaching the semi-finals. For me this is a different feeling from the season we won the trophy. This team is better than that one was, but this is another year, another competition. Although we are getting closer. "We knew they had some problems and we had to do the job. We had to profit from their mistakes. The three goals were really good and it is important to see different players scoring goals," he added On the other hand, PSV Eindhoven coach Ronald Koeman was very realistic when he admitted the end of their European campaign. "We played with the same tactics against Arsenal to beat them in the last round. "The result is bad. It is impossible now to go to Anfield and make out a case for reaching the next round. If I tried to find a reason to believe that, I would be from another planet." "We played well until they scored their first. Then we started to give Steve Finnan too much freedom and we started to make mistakes." "From then on it was clear that Liverpool were too strong for us. It is not realistic to think that we can win the tie now."