The pair will lock horns this week when France face Scotland in their Euro2008 qualifier and Evra said: "Darren is an unbelievable player. He can run all day and has great technique and vision.
"He's the complete midfielder and one of the best I have ever played with.
"Darren doesn't get the same publicity as David Beckham or Patrick Vieira but his work-rate is unbelievable. When you have a player like Fletcher in your team you are happy because you know he will never stop running.