Pure_Ownage
TheBrownDog
The senior coach is involved in just about every big name trade.
What you think list managers just bring in guys and tells the coach to fit them in? The coach isn't the negotiator, but if he doesn't want or need the player, the club isn't trading for them. The coach is also often meeting with the players in the discussions probably before they even nominate.
If you look at the truly top clubs like Geelong and Sydney etc the senior coach is asked their opinion on the type of players they need and then the recruiting staff are given the power to make the calls and do or not do deals as they see fit. The coaches stay in their lane and don't try to make 'captains picks'. Now there's an argument that it's easier for those 2 coaches to stay on the sidelines as they had the most experienced footy dept staff they could trust to get it right (guys like wells and dalrymple and Harley and beats on etc). But it still shows that clubs do best when recruitment and trades are left to the experts and the coaches have very little say in the actual transaction.