I am thinking that this is way light. After arb 1(which may be a little light say $6 million), I think $12 million, $16 million, FA1 $22 million, FA 2 $25 million FA 3 $25 million, FA 4 $25 million, plus options. There is a lot of risk here, but you have several players going to break the bank after 2018 and these numbers will look way light then. Do it now, If he turns down a reasonable offer, start looking for ace pitchers to trade him for. You may be looking at the next David Ortiz here, are you willing to let him walk also?