SAMIR NASRI saw red after trying to head-butt Norwich’s Sebastien Bassong.

Then City boss Roberto Mancini did his nut when ref Mike Jones failed to send off the Canaries defender.

Mancini fumed: “It’s incredible, I have seen some incredible things in the last month. If the referee wanted to send off one player, he should have sent off both, not only Samir.”

City midfielder Nasri was scythed down by Bassong in the 44th minute.

He then reacted angrily to the full-blooded challenge by going head-to-head with Norwich’s ex-Spurs defender.

Jones decided to show the Frenchman a red card after consulting with his assistant but, bizarrely, Bassong was let off with just a booking.

Mancini blew his top, accusing the official of double standards.

He said: “The referee was there, he saw everything but the linesman was behind and had one player in front, so he could not see it.

“I hate this — two rules for different teams and different players.

“We will appeal but I don’t know if we stand a chance of winning it.

“I’m very disappointed in Samir. He made a mistake and will pay his fine but it was not the correct decision.”

Canaries boss Chris Hughton also believed Jones dropped a clanger.

He said: “There was a coming together of heads. Whether it was enough for a sending off, I don’t know.

“If the referee has given it for that reason, was it harsh? Probably, yes.”