Local boy Dummett scored a superb goal in his side's 2-2 draw against Liverpool on Saturday and knows full well the importance of the north-east clash to the club's supporters.
Dummett told the Newcastle Chronicle: "I know exactly what this game means to this football club - especially as I am a fan.
"If I'm not in the squad, I'll be in the stands singing songs and cheering players on.
"But if I am playing, I know exactly what it means to win this game. If I'm selected I'll be doing everything I can to help the club."