Burglary of a building is entry without permission with intent to commit assault, theft, or any felony. Therefore the charge would enter a building without permission, with intent to commit theft.
Intent to sell has to do with drugs - possessed drugs with intent to sell them.
You could also have possession of stolen property (which if it is possession of recently stolen property it could support a finding that the person committed the burglary.)
A person does not sign a police report. The police write up a report, and the lawyer either gets a copy or is able to take notes. The accused may sign a statement (with warnings at the top if he is a suspect.)
They only way it would really matter is if the allegations did not amount to a crime, or that one may want (in your friend's position of having already been punished) to collaterally attack his case.