Some of you really need to get a handle on what professional football is in the sense you absolutely should not throw a boy into a man’s game.
This is their livelihood and from their perspective, once you are out on a professional pitch, you are fair game. Some fellow pros might go nice and not aim to take out a fragile waif of a boy, others absolutely will not, and then what? A yellow or red card whilst JJ is in bits because he’s not built to handle the men’s game yet? And then who should the finger be pointed at for him being out there in the first place? I think some of you have a romanticised ideal where he gets to be all pretty and fancy whilst pros, trying to win the game for their team, idly coo and let him be. This kid taking potential bonuses out of their pockets and what not. It may happen, but the consequences on the other side are so dire that the club will not be negligent or stupid enough to risk them until he’s physically ready.
It’s not his age holding him back, rather, his build. If you cannot see that he’s still built like a child the conversation is already redundant - grown men go easy when playing with children or they don’t play at all, which is why we have developmental stages - the youngsters that do come through super early are not built like Gabriel - they are typically manboys or, they are already extremely strong and wiry relative to their age, like Dowman. Even a young Giggs was built like a twig on first inspection, but when you actually look at him properly, he was sinewy, extremely agile and explosive and his speed and agility was already in its matured form - he didn’t get any faster or agile, which is what accelerated development typically looks like in terms of attributes if you don’t have a freakishly adult build at a pre-adult age. Gabriel might not get any more agile, but he almost certainly will get faster, stronger and more robust, and then he’ll be almost certainly in the squad.
You can’t simply parse skill from the other factors. Professional football does not and should not work that way, so every bit of skill you see him pull off, ask if that’s applicable against full-grown men giving him no quarter. Right now it’s clear that touch contact is dangerous for Gabriel at PL level - you absolutely do not want him getting a full-blown crunching tackle from a relative juggernaut in comparison to what he currently is. Look beyond - or stop isolating - the skill element and consider the other factors; I doubt he’d even get a run out in La Liga with his current build and that’s a much friendlier league for prodigious talent to be introduced to. His time in the PL will come when his body is ready to handle it and it would be irresponsible for it to come before that.