Les Bleus boss admitted that Spain, Germany and Netherlands are champions-elect going into this summer's showpiece while his side must be strong defensively to stand a chance
Much is expected of Blanc's men, who extended their unbeaten run to 21 games with a 4-0 friendly win over Estonia on Tuesday. However, the former Bordeaux trainer believes his side are far from the main contenders to win Euro 2012.
"We are not favourites. I am not the only one to say this, there are only two or three teams who are favourites to win Euro 2012: Spain, Germany and Netherlands. These three teams can hope to win the tournament, at least initially," Blanc told the assembled press in Ukraine.
Although his defence kept a clean sheet against Estonia, the France coach was critical of his side's back line and he is aware that his country's chances of success in Poland and Ukraine will depend heavily on a solid rearguard.
"We relied on a good defence during the qualifications for Euro 2012, even if we often changed personnel," he said.
"I hope that we will realise our potential because without a strong defence, we cannot go very far."
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"Samir's making progress, but he can do a lot better. When I hear people say that he's not like Franck, I can only say that they're simply not the same type of players," he added.
With Les Bleus opening Group D game against England on Monday, June 11, Blanc has an injury headache with three defensive midfielders on the treatment table.
Blaise Matuidi and Yann M'Vila (ankle) are both likely to miss the clash against Roy Hodgson's men, while Alou Diarra doubtful at present due to a knee injury.