Evra is good friends with the Manchester City striker, but was disgusted by Tevez's 'RIP Fergie' actions and refusal to apologise.
He rapped: "I was very surprised by Tevez's attitude against Sir Alex Ferguson.
"I'm not sure how the manager feels about it but I'm sure he won't be impressed.
"It's disrespectful. Tevez spent two years at this club and was treated extremely well by the manager so I don't really understand his reaction or the truth about the situation."
Evra reckons United's rivals were equally guilty of bad taste when they put up a massive poster of Tevez with the message 'Welcome to Manchester' when the striker swapped clubs in 2009.
The French full-back, 31, added: "The poster was in very bad taste, no one from Manchester United appreciated it.
"Tevez is an adult, he plays for another club and is responsible for his own actions.
"It's a shame because he was always respected at Manchester United and remained in contact with some of the players.
"But I have no idea what will happen now."