I'm looking for justification for his continued presence at the club. Either use him or move him.
And I could also ask you the same - Garnacho has not been good at all as a starter, and in his preferred position. What has he done to suggest he will be good as a starter in another position? He's much more effective coming on against tired legs. As far as I'm concerned, he and Pellistri have the same chance on the right. But I'd give the latter the chance to see if he can cut it. If not - ship in January.
We're not seriously claiming now that Pellistri has shown as much as Garnacho? I also had another response suggesting similar...way off the mark for me.
Sure, Garnacho is raw, and he hasn't started this season particularly well, but he looks to have genuine superstar potential and has already managed a handful of goals and assists.
Pellistri has been on loan at Alaves and done basically nothing to suggest he can become a real top player, despite being older than Garnacho, and has really only looked mediocre in the short spells he has had for United.
We get this a fair bit on this forum. If Pellistri isn't playing, it's probably because ETH and his coaches watch him every single day in training and have decided he's down the list in terms of options - not through some kind of favouritism or unwillingness to try young players.
Remember training isn't just drills, there'll be all sorts of mini-games, competitive 11 vs 11s, 5-a-sides etc...its perfectly possible to assess a player based on all of this body of evidence, as an alternative to having to throw them in a Premier League game.