PARIS, April 14 (Coupe de France) - Lyon midfielder Juninho has urged his team-mates to forget about their recent wobble in Ligue 1 when they take on Metz in the quarter-finals of the Coupe de France.Les Gones have seen their lead at the top of the table cut by five points over the past eight days, with Bordeaux providing a real challenge to the reigning six-time champions. Alain Perrin's side have a crucial league game at relegation-haunted Strasbourg next weekend but before then, they must focus on the last-eight clash with Metz. 'As far as the title is concerned, there is everything to play for,' said Juninho, who is a doubt for Tuesday's game because of an ankle injury sustained in Saturday's 1-1 draw against Rennes. 'But we mustn't lower our heads. We know that in football, it is difficult to perform every day. 'We produced an average performance (against Rennes) but we must mobilise ourselves for the Coupe de France game against Metz.' Lyon have dominated the French league since the turn of the century but have not won the cup since 1973. They have also raised the trophy aloft on two other occasions, in 1964 and 1967. Left-back Fabio Grosso, who is nursing a knee problem, is also a doubt for the match against Metz, whose sole focus this season will be the cup after their relegation from Ligue 1 was confirmed on Saturday. Matheus Vivian should be fit for Les Messins even though he did not train on Sunday because of a foot injury. The other quarter-final on Tuesday sees Amiens host fellow Ligue 2 side Dijon. On Wednesday, Carquefou will look to spring another cup surprise by dumping out Paris St Germain in a match that will be played in Nantes. The amateur club have already knocked out Ligue 1 high-fliers Nancy and Marseille in the competition and must fancy their chances against PSG, whose morale will be low after dropping back into Ligue 1's relegation zone following their 3-2 defeat to Nice on Sunday. The capital club's priority is clearly the championship and coach Paul Le Guen should rest his key players, as he has done in earlier rounds. 'I am not thinking about Wednesday's match - I already have enough to think about with the league,' said PSG president Alain Cayzac. 'We will try to play well against Carquefou but that is not my preoccupation. 'There are other priorities.' Bordeaux welcome Ligue 2 side Sedan in the other last-eight tie on Wednesday.