De Pouzilhac made the comments yesterday saying that Bollore should make it clear whether he wants to break up Havas or if he has long-term plans for the company.
He said: "When you have your principal shareholder and you do not know whether he is a corporate raider trying to strip the group and sell it off, or an industrialist trying to building a media holding around Havas, it creates uncertainty."
At the same time, he also argued against another of the advertising giants swallowing up Havas, saying that consolidation in the industry had gone too far and that it was not in the best interests of clients.
The Bollore Group owns more than 20% of Havas' shares and has demanded representation on the board of the company. It has built up its stake rapidly, only starting to buy stock in the company in summer, when Havas was in the middle of its doomed takeover bid for Grey Global Group.
According to the Financial Times, a spokesperson for Bollore Group has said that the company sees Havas as a medium- to long-term investment and that it is looking to build a "communications pole".
Bollore Group is an old, family-owned company, best known for its industrial interests, although it has recently started to build up a media arm.
Its interests include shipping, logistics, fuel distribution and it also owns rubber and palm oil plantations. Its media businesses include the radio station Radio Nouveaux Talents, which began broadcasting in March this year, and it plans to launch a digital television station called Direct 8 next year.
Havas released its third-quarter revenue figures yesterday, revealing that it had seen organic growth of 2.1% to €338m (£236.2m) for the period.
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