Boyd will be 31, which is not particularly old for a pitcher, reportedly stays in very good condition, will be coming off a surgery with a high success rate - and probably will be able to pitch better with the problem fixed. I would guess he is worth a little more than the average view here. And to be honest. if I'm the Tigers, going to arbitration would not really be a bad route because it limits any commitment to one year.
I would think they need both Boyd and Peralta back if they can get them, though neither may be all that cheap.
Do not see them making a bid for JV, he's going to go for more years & $ than the Tigers should pay. I hope the guy can pitch until he is 45 and wins 300 games, but I don't want the Tigers carrying the risk.