Matches in Europe's premier club competition will have five officials this season after football bosses decided to extend a trial from the Europa League.
Milan should be glad of the extra two pairs of eyes after being incensed with the refereeing in Saturday's 2-0 Serie A defeat at promoted Cesena where the visitors felt they had two goals wrongly ruled out for offside and one for handball.
"We didn't play that badly. Those weren't offside," club owner and Italian Prime Minister Silvio Berlusconi told reporters.
The seven-times European champions, who have not won in six home games in Europe spanning almost two years, even put an extraordinary statement out on their website with the headline: "Without any further comment".
"Law 6 on the assistant referee reads: 'If an assistant referee is not totally sure about an offside offence, the flag should not be raised'," read the article.
Milan have a slight worry over defender Thiago Silva after the Brazilian limped off against Cesena in Milan's second league game of the campaign, where their increased speed of movement was one positive compared to last term's patchy displays.
Third in France last term, they conceded an stoppage-time goal in Saturday's 1-1 draw at home to Caen and lie 17th in the standings.
"Football is sometimes cruel," coach Jean Fernandez said.
