If "The Soccer DON" decides to increase the salary cap, TAM/AM, etc. then I could surely imagine an in-prime, world-class player coming to the MLS. But we can't get crazy with the likes of Neymar and Ronaldo. You have to look at it in a business perspective. The MLS is a growing market but it's nowhere near generating the amount of fans and money that the top European leagues have. It would be a terrible, terrible investment for any team to buy a superstar because it would take you FOREVER to make a profit on the player, if at all.