If it's the same one I received, it's not a fan. It looked pretty much like a template message that only changes the name of the comic. My comic is being translated to (coincidentally) Russian by a fan XD But this person who just asked to translate to French and make money (even if split) from it is definitely not a fan (I'm assuming it's the same because I received a similar offer 1 day ago).
It also thought it was suspicious and currently I'm ignoring it until I change my mind. For me, it's just not worth the headache.