In March later that year whilst playing for Millwall, Muscat was red carded and suspended for five games for a challenge from behind on Sheffield United player, Ashley Ward which ignited an on-field brawl that involved most players from both teams. Sheffield United went on to win the game 2-1 despite having goalkeeper Paddy Kenny sent off alongside Muscat, and as Millwall players were walking off the pitch, Blades manager Neil Warnock was seen shaking players’ hands while also saying “serves you right for f*cking Muscat, that” - one of which being current Chelsea assistant manager, Jody Morris.