His better comp is Anthony Gose. I think Avery does a better job at plate coverage and has the ability to spray the ball to all fields. Goes has more power, better defender, uses speed effectively in games. Both guys are free swingers and will tally a good percentage of unproductive outs.
I think Goes has come to a point in his game defensively, with the power in the stick, that he can profile as an everyday player in the near future. I think you can live with the unproductive aspects and maybe he can use his speed in small ball to limit those ineffective times at the plate.
Avery is still raw defensively and does not have the first step instinct down enough to live with any offensive holes. He must continue to learn to use his speed in game. He does a solid job moving through the bases, but with his athleticism the guy should be cruising from first to second on every first pitch. I think he ends up with a chance at 15 HR power, but he needs to be more selective to see an average contact rate. He has time to iron out the wrinkles, but at this stage without the improvements he may/may not be the everyday type. If he improves defensively, you can live with the bat because of the position.