Kevin De Bruyne reportedly infuriated Napoli boss Massimiliano Allegri during their 3-1 Champions League defeat to Villarreal.The Italian side led on eight minutes via Amir Rrahmani, but fell apart in Spain on Tuesday night to suffer a second successive league phase defeat.De Bruyne, a midfield legend who won 19 trophies at City, is said to have got on the wrong side of Allegri during Napoli’s defeat to VillarrealGettyDe Bruyne, now playing in his second season at Napoli since leaving Manchester City, started and played the entirety of the match.However, it appears as though his and Allegri’s differences in opinion regarding tactics spilled across the Estadio de la Ceramica pitch.What did De Bruyne and Allegri row about?As per La Gazzetta dello Sport, tension between the pair saw Allegri repeatedly shout the Belgian international’s name on the touchline.The former AC Milan and Juventus coach, who was once linked with a move to Arsenal, wanted De Bruyne to play in a deeper midfield role.Allegri believed he could utilise his playmaking qualities to find new attacking routes.It would also allow ex-Manchester United man and Real Madrid target Scott McTominay to play closer to goal.However, De Bruyne is said to have not responded to his head coach, or even look at him, and he was seen gesticulating instead.Allegri was described as infuriated by the 35-year-old, who believed he would have a better impact on the match further up the pitch.“We didn’t understand each other,” the Napoli boss explained after in an apparent bid to avoid any controversy.De Bruyne has started five of their eight matches in all competitions this season, and could now be at risk of being benched once again.Allegri was reportedly fuming with De Bruyne for seemingly ignoring his instructions from the touchlineAFPNapoli are 31st in the Champions League league phase and therefore already facing elimination before the knockout stages.They will drop lower in the table should Feyenoord, Slovan Bratislava or Bodo/Glimt earn a point in their matches tonight.De Bruyne’s appearance against Villarreal was his 84th outing in the Champions League.Before Napoli, he featured in the competition for KRC Genk, Chelsea and City, with whom he won the title in the 2022/23 season.However, De Bruyne has not scored a Champions League goal since April 2024 during a quarter-final loss to Madrid.He has 16 goals in total in the competition, and will hope to add to his tally when Napoli face Bodo/Glimt next Tuesday.