I'd still be happy with acquiring Sale or Quintana as long as it doesn't cost the entire farm/they can keep Moncada out of it. Might not be the missing piece from a championship team this year, but neither is a rental and you really never can have enough pitching.
Having at least two more seasons of Price, Porcello, Pomeranz, Wright and either Sale or Quintana to build around means that outside of injuries, the rotation is set. The lineup is already basically done as well, so Dombrowski's focus can be on the pen, depth, and restocking the farm.
Said differently, I'd rather see trade chips used to secure the rotation for the next couple of years than to plug holes this year.