What makes UNLV appealing at all? The fact that they are the only sports team in town? That's it. Unless they are giving him over $3 million, which would be absurd since they paid Rice $300,000 base salary, this move would make zero sense for Mick.
I think the town of Las Vegas in general is just way more enticing than Cincinnati, the weather is better. And he owns horses so he likes to gamble. Bang any prostitute he wants