I might be wrong but I think he's out of options. They still shouldn't waste a roster spot on him. We have had plenty of solid bullpen arms show up this spring. There are better pitchers on our roster.
I could see us trading either Revere or Benson for a solid SP. Might have to throw more then that on the table, but it really depends on the year they have.
Thats like asking if you want a Mercedes or a Jaguar. Right now though you have to go with Verlander. His is the best of the best. Can't go wrong with any of them. My second choice would be Kershaw.
Dozier could still use alittle more time in the minors, but I could see him making the team. I think the team will look outside before deciding anything.