Honestly, I think he could fetch more than we may expect. His bat is just below league average (92 wRC+), doesn't walk a lot (4.2% BB) but doesn't strike out a lot either (15.1% K). His defense and base running are stellar. He is in a "breakout" year, already providing 2.2 WAR over 97 games and is still young at 26 years old. I have shifted my views of him from a 4th OF to a everyday OF you can put anywhere. That is pretty much gold for teams like Indians, O's Mariners and maybe the Tigers.
I don't think he'd fetch a top end ace but something around Gausman or Paxton could potentially be done. I don't think the Jays want to go that route however. With Saunders and Bautista's future in the OF in question and no real immediate solution for a replacement outside of Pompey/Alfrod, whom may never make it, think the Jays would rather keep him.