That is not plausible.
Dooku, in Attack Of The Clones, was clearly befuddled by the presence of a clone army when it arrived under the leadership of Yoda and Mace.
He beat a hasty retreat with his Trade Federation, Techno-Union and Banking Clan cohorts when they lost the battle with the Jedi and the clone army.
Also, if he knew of the clone army, why is he wasting time getting the Trade Federation and others to rally to his cause?