Logan ain't the only Paul Brother KSI is looking to destroy in the ring ... the YouTube superstar-turned-boxer tells TMZ Sports he wants a boxing match with Jake Paul!!
We spoke with KSI about his plans following his rematch with Logan on Nov. 9 at Staples Center ... and he revealed he wants his next victim to be the guy who beat his little brother, Deji, last year.
"I want to fight Jake Paul, man. I really want to break his face," KSI tells us.