Jimmy Butler says he refuses to let his family join him inside the NBA bubble in Orlando ... because it's a "business trip" and he doesn't want to be distracted!
FOR REAL!
The Miami Heat star explained himself to NBA on TNT sideline reporter Allie LaForce -- who passed it along to viewers Monday night while Butler was DROPPIN' 40 on the Milwaukee Bucks.
LaForce said while some players and coaches were excited to finally welcome wives girlfriends and children into the bubble -- people they haven't seen in person in months -- Jimmy was drawing a hard line.