The frustration behind Ben Wallace's insubordination Saturday night has been brewing since the first week of training camp, according to the Chicago Tribune.

According to league and Bulls sources, Wallace has felt unfairly singled out by team rules that have taken away his pregame music, his headband and his tape-free ankles.

Sources said Wallace became upset early in training camp when Skiles enforced a team rule to tape ankles. Wallace never taped his ankles when he played for Detroit.

General manager John Paxson is to talk Monday after practice about Wallace's breaking a team rule by wearing a headband in Saturday's victory over the Knicks. However, Wallace is expected to miss practice because he needs an MRI on his right wrist and fingers after injuring them in the second quarter in New York.

What annoyed Wallace, a source close to the player said, is that he wasn't informed of the no-headband rule until after he signed his four-year, $60 million free-agent deal.

Bulls management considers itself to have minimal rules. Most just seem to have rubbed Wallace the wrong way, which could be manifesting itself in his uneven play.  

According to the Tribune, Wallace might get more touches in an attempt to jump-start his defensive play.