TBH most of the US talent is in Europe already and not playing in MLS. Anyone who has a decent season in MLS is immediately snapped up by someone in Europe. Kenny Cooper, Sacha Kljestan, Brad Guzan, Dwayne De Rosario, and Maurice Adu were the main young stars of MLS 2008 and all have either signed contracts in Europe, are seriously linked with leaving, or have stated their desire to play in Europe. Also there is a huge number of potential stars playing for reserves and developing at teams across Europe already. The only real world class stars the MLS has these days that aren't looking to leave are Backham and Landon Donovan.