The retired striker believes the reason why the French champions have struggled this season is due to a lack of firepower, and advises them to shape up ahead of Tuesday's clash
La Paillade go into their Champions League clash with Olympiakos on Tuesday on the back of a draw at Troyes over the weekend, as they try to reverse the outcome of their last fixture in October against the Greeks, when they fell to a 2-1 defeat.
"When [Giroud] played, their team-mates felt more secure," said the one-time Ballon d'Or winner and ex-France international.
"Other teams do not fear Montpellier anymore. They no longer fear that a guy will come along and change everything."
"The players change, but they [the strikers playing now for Montpellier] are not pure goalscorers. They score from time to time, but not in every game [like Giroud]."
Montpellier are bottom Group B, with one point to their name, and trail section leaders Schalke by six points.