Caen captain Nicolas Seube believes Marseille could be vulnerable ahead of their crucial UEFA Champions League clash against Borussia Dortmund next week. Marseille travel to Germany on Tuesday in search of the win that would seal their progression to the knockout stages of the competition behind Arsenal in Group F. Seube knows OM will prove a stern test in tomorrow\'s Ligue 1 clash following their impressive 3-0 win over Paris St Germain last weekend but insists now is a good time to play them as they have one eye on Europe. \"Despite their victory over Paris, they are finding it a little hard,\" Seube told www.om.net. \"They will want to follow up and win the match with as many goals as possible. This is bound to be a tough game. They are not yet qualified for the Champions League and still have an important game. Finally, they have not been exceptional this year. They are now in need of points in relation to their goals.\" Caen will be looking to return to winning form following their disappointing 2-0 defeat against Bordeaux last weekend which saw them slip one place below OM in the overall Ligue 1 standings. \"We must have more desire than we did in Bordeaux, where we went completely past it,\" Seube said. \"Marseille in particular is a big team that fire the crowd up. We expect a great match.\" Caen are likely to be without central defender Gregory Leca who picked up a calf problem against Bordeaux while OM will be without striker Loic Remy and Jeremy Morel who are both suffering from ankle injuries. Remy scored the opening goal of OM\'s win over PSG before he was substituted just after half an hour after picking up the knock. However, there is good news for Marseille, as Andre-Pierre Gignac has been reinstated to the first team after he made an apology to coach Didier Deschamps. The striker was suspended for the game against PSG after he clashed with Deschamps last week.but a statement on the club\'s website revealed he is back in contention. The statement said: \"The Marseille president Vincent Labrune and coach Didier Deschamps have met Andre-Pierre Gignac. Following the meeting, it has been decided that the player will be reintegrated into the first-team group having apologised.\"