If your associate doesn't know how to use the internet, make sure he gets his money's worth for this card if he indeed chooses to let it go.
Money-wise, don't let it go for anything less than $50. This card has gone for more than that in recent months.
Cards wise, your "guy" can pretty much get ANY amount of cards he wants from the right collector.
I just want to reiterate, this card is highly sought after and isn't just ANY rare foil so make sure the deal is as sweet as possible if he sells/trades it.