Martinez would be a good signing! Heaton will be on the decline just as Martinez is coming into his peak. He might be understudy for a year to Heaton, or he might even be considered better than Heaton.
I think what’s throwing a lot of us is the transfer window being open until October, a lot of us want the signings before the season starts but we have to accept there’s a chance a lot of our signings might not be until we are into the season.