I don't know. I like both fighters. Kossobutskiy will be the victim of a quick stoppage by Top Rank's dodgy referee on July 1st. Vladimir Tereshkin wasn't badly hurt and never knocked down in his fight with Anderson, he was dodging punches in the corner, but the despicable Kenny Bayless awarded Anderson with a TKO. Kossobutskiy is better than the inactive former Klitschko sparring partner Tereshkin. I think he will defeat Anderson with fair and honest officiating.
I'd pick Hrgovic by UD. Now for offense: I think Zhan is very overrated. Stiff, inactive on the inside despite going there often, short and very slow. Ignoring his quality, I don't get why so many people like him, he's probably the most boring heavyweight I've ever seen.