Michael Avenatti is not lying low following his release from custody for allegedly extorting Nike -- instead, he's doubling down ... and throwing two huge basketball stars under the bus.
Avenatti dropped a bombshell tweet accusing Nike of paying off 20-year-old PHX Suns star Deandre Ayton and his mom before he made it to the NBA. Ayton played college ball at the University of Arizona and was a highly recruited high school star before that.
Avenatti wrote ... "Ask DeAndre Ayton and Nike about the cash payments to his mother and others. Nike’s attempt at diversion and cover-up will fail miserably once prosecutors realize they have been played by Nike and their lawyers at Boies. This reaches the highest levels of Nike."
And there's more ... he's also calling out star Univ. of Oregon center Bol Bol, saying he and his handlers received large sums of cash from the shoe co.