Aliadière missed much of the following 2004–05 season after picking up an injury in the 2004 FA Community Shield, and was kept out of action until March. On his return, he made six substitute appearances for the first team, including the FA Cup semi-final against Blackburn Rovers. Although he failed to score in these matches, he scored eight goals in five games for Arsenal's reserves. Despite his limited opportunities and being linked with a move to Paris Saint-Germain, he was offered and signed a new Arsenal contract, running until the summer of 2009, announced at the same time as a loan move to Celtic.