I don't like to Double post but this is a way to make Free agency in Single Entity, by American Soccer Now. It talks about taking the University of California system.
http://americansoccernow.com/articles/mls-could-retain-single-entity-amp-offer-free-agency
Gyasi Zardes of the Los Angeles Galaxy is certainly a hot commodity after his display for the U.S. national display against Panama. According to the MLS Players’ Union data, he played in 2014 with a base salary of $125,000 and total guaranteed compensation of $198,000. Not chicken feed by any means for a 23-year-old, but it wouldn’t be surprising if another MLS team—say, the San Jose Earthquakes—would be willing to pay him more. Under the UC System, San Jose could offer him total guaranteed compensation of $213,840—a raise of 8% or $15,840—and the L.A. Galaxy could match that.
MLS and the Players’ Union could agree to a higher maximum percentage for salary raises offered in intra-league transfers—perhaps 20%, or $39,600 in Zardes’ case—but in either case it wouldn’t permit a bidding spiral that would jack up player costs leaguewide. San Jose could try to lure away Zardes with promises of a more prominent role on and off the field or a training environment more conducive to his development, but the offer of a raise probably wouldn’t be sufficient motivation on its own to induce Zardes to relocate. Nevertheless, the system would allow Zardes the opportunity to choose where he wanted to play at the end of his contract and the offer would generate a raise for him, which would provide at least some form of market-based mechanism for rewarding players.
If, however, Fulham came calling and offered £250,000, or roughly $380,775, in total compensation, then San Jose could up its offer to match or beat Fulham’s and the Galaxy could match that. If a bidding war developed at that point, it would be between MLS and Fulham, and not between San Jose and LA.
This single-entity version of free agency could be attractive to both MLS’s investor-operators and to players. It prevents one deep-pocketed investor-operator from driving up everyone’s costs by starting to offer extravagant salaries to pedestrian players. At the same time, it allows players to move freely and to get fair market value for their services—but in a manner that is consistent with the principles of a single-entity structure.