Square Enix is not some mom and pop company, They have their own Marketing division that makes TV ads. If SE was interested in this, they would post for it, like what they did when looking for talent in XI.

If this isn't a job request, then its trying to make fanwork official, a big nono by most companies. Most Doujin circles would be very hard pressed to pull this off, and must already have a successful product to the fans that would be more trouble than its worth to squash.