FWIW, Geno would never tell a kid "we're offering you but you aren't going to get the opportunity for PT". Nor would he say "I guarantee you playing time".
Having said that, Geno and the staff have an "idea" when they recruit kids how good they can be. Some, like Collier, Samuelson, Danger, Walker, Williams and ONO are "expected" to either be starters or earn significant PT throughout their careers. Others like Irwin, Bent, Engeln, Gordon, Gardler, Fernandez, etc. are recruited as role players - expecting they will work hard and fill in gaps when able.
The tough ones are the kids who are somewhat highly rated, but not elite. Michala Johnson, Courtney Ekmark, Brianna Banks, Mikayla Coombs, Boykin, Chong, Batouly Camara. If these kids improve enough, they could be starters or key reserves off the bench, or they could languish there as well.
FWIW I see nothing wrong in offering a kid who the staff feels is a good fit. High character, hard worker, good teammate, etc. As he told Shea Ralph "If you are good enough, you will play a lot. If you suck, you won't"...