We aren't entitled to know what Dombrowski is thinking or planning. For all we know he was considering bringing up Devers, who was doing very well in the minor leagues, all along. As I have written, there are no better alternatives to play 3B to Devers right now. All we can do is hope that somehow is *potential* is realized soon, because he certainly isn't performing well right now.
As for what the Orioles can get for Machado or Britton, its absurd to think that they will get a haul for either guy unless the player is signed long term before the trade. No GM is going to hand over a top prospect for a two month rental, let alone a starter with *potential*. I would think that the Orioles will try to get something for those two guys rather than let them just walk out the front door, but its likely to be mid level prospects.