Anything is possible, but i doubt he will leave Kamui land. He will most likely give his eyes to Sakura so that she can give them to the designated person.
How will he get sakura out of kamui then if he's giving her his eyes yet staying there? Lol doesn't make sense at all
I don't think so, because he wants her to see his request as that of an enemies. Enemies don't ask enemies to heal each other.
He also said final request and he didn't ask anything else of her, so it's most likely a death request.