Of course we don't know what he'd accept. But I've had these discussions in my own life. No one knows what a counterparty will accept. Maybe we offer $80M/4, and he says not close, but willing to counter. Or he says he wants $200M/8 and we part company. My philosophy is that you might always be closer than you think.
IRT hitting, I am usually much more concerned about age than reversions. When a player has a 115 career OPS+, and has a current year 115 OPS+, I tend to think he is a 115 OPS+ hitter. FWIW, I see AR as a Realmuto close. I don't expect we'd lose on a 4-year age 30-33 contract, though it might take a 5th year.