Sinisa Mihajlovic was furious with the referee after AC Milan's 12-game unbeaten run ended with a 2-0 loss at Sassuolo on Sunday.
AC Milan head coach Sinisa Mihajlovic declared himself "very angry" with referee Piero Giacomelli and his own team after he was sent off during Sunday's 2-0 Serie A loss at Sassuolo.
Goals from Alfred Duncan and Nicola Sansone ended Milan's 12-match unbeaten run and Mihajlovic's misery was compounded when he was dismissed for dissent.
Defeat leaves Milan in sixth place, nine points adrift of Roma, which occupies Serie A's final Champions League qualification place, and Mihajlovic could scarcely contain his fury.