Apparently as long as he's contracted to an English club it still counts for the home grown status.
I heard that Saliba has home grown status for Arsenal, despite spending two seasons out on loan.
The biggest issue IMO is that with his skillset as you say he likes to cut inside.
This wouldn't be an issue if he was paired with say an Estupinan type fullback who overlaps him. However he is often paired with a fullback who doesn't overlap as much, Groß, Milner or Veltman for example. If he...
With a pacey FB on the outside it would open up space for him to cut inside or play the FB in.
Look at Mitoma, part of why he's so effective is he has Estupinan on the overlap constantly who draws a man away.
I think he'd be fine on the right if he had Lamptey as the fullback so that there was someone running beyond him.
With Veltman there he doesn't have that assistance going forward.
But at the same time Facu would excel in a wide role where the full back massively overlaps, unfortunately our right side doesn't tend to do that.
Imagine how much worse Mitoma would look without Estupinan constantly overlapping.
If we had Lamptey playing then Facundo could fake the wide...
He went past the fullback multiple times but there was no options for him after that.
Enciso is best wide right cutting in or behind the striker.
Buonanotte is similar but probably best centrally.
The best way to describe our system is a double defensive midfield pivot playing somewhat like Segundo Volante's and then an attacking midfielder and deep striker.
Gilmour and Caicedo can both occupy either of the defensive mid positions.
Mac Allister and Groß can occupy all three midfield...
The way I see it Enciso is 6 months further along in the process and is starting to come good.
Buonanotte has looked decent despite being 6 months behind, his potential is scary.
Also Caicedo and Estupinan have mentioned him as the funniest and everyone seems to like him.
I think he'll come good but at the moment he's trying too hard.
Once he gets more settled and more comfortable in the first team he'll shine.