The former Manchester United man is sure to get a hot reception from the Reebok faithful after spending over a decade at Old Trafford prior to his move to the North East over the summer.
Butt feels that Bolton are a team not to be taken lightly by the Toon Army and says that the Trotters have players to influence a game with the most notable being the skipper Jay-Jay Okocha.
"Personally I think Bolton will be our toughest test so far. I know they always made it difficult when I went there with Manchester United.
"They will always be in your face, but they also have flair players capable of turning a game."