Real Madrid midfielder Mahamadou Diarra said he is not prepared to be on the losing side when he returns to Stade Gerland to face his old club Lyon on Wednesday. Diarra was on the winning side when Lyon crushed Real Madrid 3-0 in last season's edition of the UEFA Champions League. But this year he is determined to help Los Meringues beat his old team in this year's European competition. "It was 3-0 last year and this year it is going to be difficult again," Diarra told the Real Madrid website on Tuesday. "But I'm sure of one thing and that is that I don't want to go back there to lose. The Mali international, who joined Real from Lyon for a fee of 26 million euros ($33.06 million), will provide his new side with much needed information. "I'm familiar with French football and I know what we have to do to avoid losing. We are capable of springing a surprise," he said. While seeming confident about his team's chances, the 25-year-old admitted there was one thing he's uncertain of. "I don't know how the fans will react," said Diarra. "Maybe some people will cheer me for the four seasons that I was there, but I'm not sure. Anyway, I have to be focused on the game and can't afford to get nervous about that."