Goals from Elliot Embleton and Ross Stewart earned the Black Cats a 2-0 win over Wycombe.
De Bruyne took home the Player of the Year award, while his younger teammate collected the Young Player of the Year prize for the second successive year. Both players have enjoyed another strong season, with City on the periphery of their fourth league crown in five years. De Bruyne has recorded a career-best 15 Premier League goals and 13 assists.
The France superstar had been heavily linked with Real Madrid.