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With rumors swirling of LeBron James' potential return to Cleveland, bettors have flocked to the Las Vegas SuperBook to throw down money on a 2014-15 Cavaliers NBA championship.

In fact, so many bets have been coming in that MGM has dropped its odds of a Cleveland title to an incredible 10-1.

"They are our biggest liability right now," MGM VP of Race and Sports Jay Rood told David Purdum of ESPN.com, adding, "We took a dime ($1,000) on them at 40-1."

Jeff Sherman, Las Vegas SuperBook assistant manager and head NBA oddsmaker, told ESPN.com the Cavs were originally set at 60-1 before wagers started coming in.

The San Antonio Spurs (9-2) and Chicago Bulls (7-1) are the only teams that have attracted more money than the Cavs, but no team has received more overall bets since the odds were updated on June 9.

[ESPN, h/t Next Impulse Sports]