I disagree with pretty much everyone on here. it was a nice gesture, but asking for a player that you support isn't wrong at all. they probably went in the store and had no idea who any of the players are. just tell them you appreciated it, but would wear it more if it was your "favorite" player. I don't think they would be offended.
it's more offensive to pretend you like it and hang it in your closet to never be worn