I don't think C's should bother with dealing for Irving. We should try for LeBron though. If Cavs are thinking long term dealing LeBron and building around Irving is the best move.
My offer would be Horford, Crowder and Rozier along with a non Lakers/net 1st pick for LeBron.
C's starters= IT, Hayward, LeBron, Morris, Baynes
Bench= Smart, Brown, Tatum, Theis, Zizic.
Get a few vets to come in mid season after buyouts and maybe they can challenge Warriors.
Cavs team stays legit and probably still 2nd best team in the East
Irving, Korver, Crowder, Love, Horford.