Thanks Randy and ILS (Tommy Points), so the Stepien Rule doesn't specify that the mantained 1st round pick must be yours, but anyone which is unprotected. Then Moranis trade is possible and interesting. However, I don't think we can keep Olynyk adding so much salary even with his Bird rights.
I ultimately don't think I'd do it, as a team with IT, PG and Carmelo would need three balls in offense and two of them are bad in defense.