As per my previous post, it is not written in the league rules but the previous LM Billy clarified in the past that every team involved in a trade must put an asset (pick or player) on the table.
Anyway it is just a technicality. If you are not willing to renegotiate the trade to include an asset from Pelicans, I will approve the deal as it is, considering that a specific rule is currently not in the league rules.
I will update the league rules to include it and going forward in every new trade any team involved must put an asset (pick or player) on the table