Birmingham City manager Alex McLeish was anegered by Aston Villa midfielder Nigel Reo-Coker's antics in the 0-0 draw at Villa Park on Sunday.
Reo-Coker and Birmingham's Craig Gardner clashed on a number of occasions in the Second City derby and McLeish felt the Villa man should have been given his marching orders for an incident in the second half.
"It doesn't seem that Reo-Coker and Gardner get on. I deduced that quite early," he said.
"Nigel had a lash out and some referees might have interpreted that differently. He (Howard Webb) didn't see it as violent conduct.
"I saw Nasri at Arsenal when he kneed Liam Ridgewell in the backside in a similar fashion. I've seen them get sent off for that."
McLeish also felt that a penalty decision when Reo-Coker appeaered to handle the ball in the area went against his side.
"He moved his arm. It is human instinct to move the arm. But we've not had much luck with penalties for a couple of years and it was no surprise not to see it given," he added.
