Would it be worthwhile having a feature on the League Home page where owners can list players they'd be looking to trade, sniffing out interested owners rather than having to approach owners directly?
ie Player X has 54/99 for a position, you list him for trade.
Owner Y offers 1st round next season plus a player, Owner Z offers 3rd, 6th for next season and a 7th the season afterwards etc.
Owner of the player can then acept one or reject all and have the ability to take their player off the trading block.