"We have a small group of players that have made some choices that are extremely disappointing", head coach Jim McElwain said in a statement.
The other players that are suspended for the first game are: freshman left tackle Kadeem Telfort, redshirt freshman defensive end Jordan Smith, redshirt sophomore defensive tackle Richerd Desir-Jones, and two freshmen linebackers in Ventrell Miller and James Houston.
According to ESPN's Edward Aschoff, the players were suspended for using student ID cards, which can be used as charge cards, to make improper purchases at the school bookstore. They have missed some practice and will miss the MI game. He had 1,399 receiving yards and seven touchdowns last season.
United opening win "means nothing" yet says Mourinho
Jose Mourinho's side have done equally impressive business, bringing in Everton's Romelu Lukaku following Ibrahimovic's departure at the end of last season.
The Florida Gators will be without possibly their best player in their huge season opener against the Michigan Wolverines.
But his talent has been overshadowed by his troubles.
Callaway was cited for pot possession earlier this spring. He admitted in court documents that he smoked marijuana, though he was eventually cleared of the battery allegation by a Title IX investigation. He received a misdemeanor marijuana citation in May and admitted during a Title IX hearing a year ago that he was under the influence of marijuana during an alleged sexual assault.
Davis was expected to be a key contributor in Florida's defensive line rotation.