Got into Hayes and Avdija most recently...
Avdija by himself is a good prospect but in the scheme of the Cavs roster construction the two things the Cavs need most from their wings (shooting and defense) are not his strengths... He's a really good facilitator and would operate best as a point forward.. I can see why Altman likes him but unless the Cavs plan to move on from the current backcourt pairing, it's just not a fit...
However, even if you plug in Porter Jr., to the starting lineup, I still don't think Avdija provides enough shooting, defense or off-the-ball traits to be a current fit..
If you're looking how he would fit best with this roster, I would say off the bench with Sexton...
Not seeing much that would keep Hayes off the top of my board. Shooting? Yeah, his mechanics off the dribble need work, but the fact that he shot 88% from the line last year (and 86% over the last 3 years combined) make me feel confident that with proper coaching he'll be a solid outside shooter sooner or later. Similarly with defense, he gets beat off the dribble now, but the size, athleticism, and reflexes are there for him to develop in that area with good coaching and improving fundamentals. The biggest concern I see is that he's pretty left-hand dominant, but with an 18-year-old it's a bonus to be ambidextrous, not an expectation, so that doesn't faze me too much.