Meanwhile, a contest between K-1’s Norifumi “Kid” Yamamoto and Rani Yahya, who is contracted to Zuffa-owned World Extreme Cagefighting, was announced last week for the Dec. 31 show. The match-up is rumored to mark a fighter lending agreement between Zuffa and K-1 parent company Fight Entertainment Group, which would allow the UFC or WEC to use fighters under contract with the popular Japanese promotion at a later date.
Such an agreement would mean fighters once thought unlikely to compete in the UFC or WEC would be allowed to fight for either organization. In effect, sought-after K-1 fighters like Kang, Yamamoto, Melvin Manhoef and Marcelo Garcia could all fight for the UFC before their respective contracts run out. Kang calls the idea intriguing, as it would open up a number of matchmaking possibilities.
“You still might see me in the UFC. That would be awesome,” Kang said. “You never know with all the deals that are happening. I’d love to fight for them some time.”Link
About Part way down under the heading "KANG’S STATUS FOR DEC. 31 K-1 SHOW STILL UNCERTAIN"
Not definitive and thats why I wasn't shouting from the roof top, but credible rumour at the very least.