Coach Christophe Galtier has warned his St Etienne side that Guingamp will be no pushovers ahead of their Ligue 1 clash tomorrow.
Les Verts began their campaign on a winning note last weekend with a 1-0 victory over Ajaccio but it was not a happy return to the top flight for newly-promoted Guingamp.
Handed a tricky opening fixture against Marseille, Jocelyn Gourvennec's side found themselves three down after 16 minutes, although they improved and only lost 3-1.
Galtier told www.asse.fr: ``They are a promoted team. People always think it's easier. It will not be the case.
``Guingamp will not repeat the mistakes they made early in the game against Marseille. This is a team that breaks forward quickly with good attacking strengths.''
Galtier is hoping Franck Tabanou will be fit after picking up a knock in the match against Ajaccio, with the winger set to undergo a fitness test.
There was bad news this week for defender Paul Baysse, who suffered a ruptured cruciate ligament in a reserve team game last weekend and will need surgery.
Two strikers have left the club on loan, meanwhile, with Lynel Kitambala joining Auxerre and 20-year-old Kevin Mayi moving to St Etienne's partner club Niort.
Guingamp were given a boost on Wednesday with the news striker Mustapha Yatabare has extended his contract until the summer of 2015.
Last season's Ligue 2 top scorer had a mixed day against Marseille, missing a penalty but making amends by scoring their consolation goal.