 His second goal for the club also came in dramatic circumstances when he again netted in the 90th minute on 23 May 2009 against Marseille but Nancy were beaten 2–1.After days of speculation, on 16 July 2009, N'Guémo completed a one-year loan move to Celtic with an option to make it permanent.He wore the number 6 shirt the squad number previously allotted to Bobo Baldé.