Closers aren't worth big $$$. Its been proven time and time again.
Craig Kimbrel showed that rookies can close. I would let Bradley Boxberger try to win the closer job out of spring training. If we get into the season and he simply isn't ready then we give the job to Bray or Masset, or whoever is pitching the pitch at the time.
We are much better off saving that money and using it on a SP or an OF.