Sheffield United boss Chris Wilder is fed-up with the officiating after their 1-1 draw against Brighton yesterday.
Wilder says football is in danger of becoming "a non-contact sport" after midfielder John Lundstram was dismissed in Sunday's draw at Brighton.
Lundstram was initially cautioned for his studs-up tackle on Joel Veltman late in the first half, but referee Peter Bankes upgraded the yellow card to a straight red after consulting his pitchside monitor.
"The game has moved on and changed," Wilder told BBC Match of the Day. "I have to change with it, I suppose. Players and fans still want to see contact. I've got to accept that the referee thought it was a red."
Despite conceding a late equaliser, Wilder was pleased with his side's efforts given they had to play the majority of the game with 10 men.
"It took an enormous amount of energy and organisation with 10 men against a side that moves the ball around like Brighton," he added. "It was a pleasure to watch my side at the end of the game.
"At times it is a simplistic game - obviously you want to score goals and we've struggled with that, but it's about keeping the ball out of your net and we showed we wanted to do that."
