So, take this with a grain of salt, but I read somewhere his wife posted an IG story where she said (paraphrasing) goodbye to Hayward, and remarked when he comes back he won't be the only boy in the family.
Some are speculating this means she and the family gave their blessing for Hayward to not have to leave again. But of course, this is likely hopeful thinking. Also, I don't think it'll disrupt chemistry much. If there's one thing this team has adapted to, it's guys going in and out of the lineup due to injury.