FS or Trade: size L Boston Celtics jersey

Hi,
I purchased a Large green Pearl Jam Boston 33 jersey. It is more of a medium. The Merch stand does not issue refunds or exchanges. If anyone is interested I'm only looking to get my $ back, not flip it for a profit. It was $80. I'd also be interested in trading it for an XL. I will be at night 2 Fenway and can meet up, or I'm happy to ship it. Thanks!