They can get it through trading with other teams. It happens a lot during the super draft. Teams can trade anything from draft picks, to players, to international roster spots and more.Salary cap should see a dramatic lift or reworking after this year to align with the new CBA agreement that will be agreed to with the player's union.
Also, there's something called allocation money, which teams can use to "buy down" a player's salary hit against the cap.
I know you get more allocation money for reaching champs league but not sure how else you can obtain it.
That's definitely a little confusing. So players 21-30 don't count towards the cap and neither do the DPs
Well actually players 21-30 don't count but DPs do, just not all of their salary. Depending on age, they can count 387,500. or less towards the cap. So without allocation and other considerations, 3 (max) DPs would count about $1.2 million towards a ~$3.1 million cap, so a big hit.
The split currently is the club keeps $600k. Which to this point has been equitable. No player has gone on for 10s of millions yet. If the player is a academy grad, club keeps a greater amount, maybe 100%.If you pay a transfer fee, that fee is included in his salary cap. So almost anyone you buy will end up becoming a DP.
And if you sell a player on (Yedlin is an example), you split the proceeds with MLS.