Johnny Manziel
Rosenhaus issued the ultimatum on Wednesday -- but 2 days later, Manziel touched down at Coachella ... where he partied his face off with Josh Gordon.
Clearly, the choice rubbed Rosenhaus the wrong way -- and the agent officially cut ties with Johnny today, as first reported by Adam Schefter.
Rosenhaus is the second agent to terminate Manziel since February ... with agent Erik Burkhardt dopping JM after 2 years together ... saying he didn't believe he could any longer help the star player.