Bol averaged 21 points and 9.6 rebounds in nine appearances for the Ducks in 2018-19.
Avenatti named Suns rookie center Deandre Ayton and Oregon's Bol Bol as players who "received large sums from Nike."
Bol, the 7-3 son of late NBA player Manute Bol, has been a projected top-5 pick in most mock 2019 NBA Drafts but has a stress fracture.
Amin played his first three seasons at Texas A&M-Corpus Christi, but is transferring to Oregon.
Fotu Leiato was dismissed from the team in May after an arrest in April.
It was unclear if star player Deandre Ayton would be available for the Oregon game, while five-star recruit Shareef O'Neal has decommitted.
It's unclear if coach Sean Miller or star player Deandre Ayton would be available for the first-place Wildcats' game against Oregon.
Barrett became Duke's third top-10 recruit already for 2018.
Nike's grassroots youth travel league program has been a must see for top Division I programs, which will put some coaches on edge.
A who's who of top programs like R.J. Barrett, recently named the tournament MVP after leading Canada to gold at the FIBA U19 World Cup.