Whether or not this is true remains to be seen, but I'd imagine Fernandinho has probably filled in City on the kid if we truly are interested.
Looking at their fixtures, he just had his first start a few days ago after their keeper (23) got a red card. Their main keeper (Bento, 25) has been away with Brazil for the Copa. Seems like Mycael probably won't get a lot of time on the pitch since all of these guys are young -- probably worth a punt either way! If he can play our style, bring him in.
Personally will be devastated if/when Ederson goes though.