I suspect that both are looking for more playing time else where.
As for Luke, many have pointed out that his plays had dropped off in the second half of the season. IMO, the league might have figured out how to play him in the second half of the season and he, being a freshman, simply did not have the ability and experience to overcome it. It is also possible being mental. How else could a player go from a 80+% FT shooter down to 50% FT shooter. That had nothing to do with other teams or his size.
I wish both Luke and Owen best wishes in pursuing their future dreams.