Serge Ibaka -- Matt Barnes Is Just a Clown ... But I’ll Still Kick His Ass

The next UFC superfight might just have a little NBA flavor to it ... ’cause hoops star Serge Ibaka tells TMZ Sports he’s serious about battling Matt Barnes ... he’s just gotta win a championship first. Subscribe! TMZ -- Subscribe! TMZ Sports -- Subscribe! toofab -- NEED MORE? Like us on! Facebook -- Follow us! Twitter -- Follow us! Tumblr --