I read this in Barry Rozner's column ( the main headline is a fairly far-fetched hypothesis regarding Joe Girardi managing the Cubs after his Yankee contract expires), and got a kick out of this tidbit:
Milton Bradley to the Mariners reminds me of the time a player was traded and I asked Cubs manager Don Zimmer what he thought of the deal from the other team's perspective.
Said Zimmer, "Our loss is their loss."
So here is a Cub history guessing game, what trade is he talking about? I googled around a bit and couldn't come up with anything.