Mario Balotelli led AC Milan's complaints at the standard of refereeing after Sunday night's 1-0 defeat to Inter Milan left the Rossoneri just five points above the Serie A relegation zone.
The game's decisive goal came in the 86th minute and was scored by Rodrigo Palacio, but in the build up to the strike some have suggested that a foul deep in Inter's half was missed by the referee.
Balotelli earned himself a yellow card after complaining to the referee and he has since intimated on Twitter of his lingering disappointment with the decision.
Buon natale e buon anno a tutti all arbitro anche. Merry christmas and happy new year to everybody and the referee too .— Mario Balotelli (@FinallyMario) December 22, 2013
Speaking after the game, Milan coach Massimiliano Allegri questioned the refereeing his side have faced not only on Sunday night at the San Siro but during the campaign so far.
"We could have defended better against Palacio's great goal, but I didn't have the time to send [Philippe] Mexes on because the game was not stopped, as it should have been, for a foul on Balotelli," Allegri said. "Instead, they raced up the field from there and scored."
He continued: "We're being fouled more than anybody else, yet we get more yellow cards. We even got a red card this time. Something doesn't add up. I'm pretty annoyed with what I've seen on the field."
Allegri added that he hopes for better results from his side in Serie A in the new year, as Milan trail leader Juventus by 27 points.
"They're going at a rate of knots at the top," he said. "Juve are doing something incredible and all we can do is get back to winning ways. We've got the last 16 of the Champions League, and we're the only Italian side still in that competition, and we've also got the Coppa Italia. We may only be five points above the relegation zone, but I believe 2014 will be different."