The summer of soccer will take a new look this year with the FIFA Club World Cup, which comes to the U.S. for the first edition of the expanded competition that will see 32 teams from around the world compete for a share of the $1 billion prize purse.

In a scenario where a team would make a perfect run to the final, the difference between earnings that the players would split would be $24,525,000 under the MLS proposal and $50,870,000 in the Playe...