D.C. United Front Office
Perry Kitchen is 23 and has two caps with the United States.
MLS commissioner Don Garber responded to criticism of his league made by Jürgen Klinsmann.
There are currently 15 MLS players who earn more than $1 million per season, headlined by Kaka at $7.17 million and Clint Dempsey at $6.7 million.
The MLS will have featured games broadcast on Friday and Sunday nights.
Bayern Munich forward Julian Green has been released by his club to participate in what could be his first match representing the United States.