And again I ask - what kind of return do you REALISTICALLY expect to get for him???
All 29 other teams also realize the issue the Braves are facing with his arbitration clock as well. I'm not willing to say he's reached his peak value. However - if he has and the best return you're going to get for him is a fringe Top 30 prospect in our system (at the absolute most), why not keep him while he's cheap? In the event he does begin to develop into a lockdown Closer over the next 3 seasons, there are going to be plenty of resources available to extend him with.
He has a 6 week track record of being relatively successful in the role, but even struggled at times during that period. There are several free-agent options available on the market who are far more proven than Arodys who would cost teams $6-$12 million (the average MLB salary of $4 million per max) over the next 3 years that teams could just go out and sign WITHOUT giving up a prospect. I love Vizcaino, but he's simply not going to bring you anything back at this point. If Grilli's traded or Arodys wrestles the job away from him, you can always revisit trading him when he actually has some value - contenders have someone go down and are desperate in June, not January.
https://whensidslidcronies.wordpress.com/2015/12/24/dont-get-in-too-big-a-hurry/