Tom Brady could, indeed, both own a part of the Raiders AND quarterback the team this fall ... that is, if a large majority of the NFL's owners would allow it.
A spokesperson for The Shield tells TMZ Sports ... two NFL-wide votes would need to happen in order for Brady to be a part of the Las Vegas ownership group and be under center at the same time.
The first ... 3/4ths of the league would have to approve his acquisition of a piece of Mark Davis' franchise.