Regarding comments: he is young, he can improve.
Instead of going into circles with simplified and somewhat dumb replies like:
He will improve.
No, he won't.
Let's use numbers, it will be easier to explain. Even though numbers are arbitrary in this case.
Let's say that each player has a natural talent and skills which he can learn.
But a natural talent is more important and "a stronger skill".
So, on a scale from 1 to 100 in skills, let's say that a play can have a natural talent in between 1 and 80 skills maximum.
And skills which he can learn over career can be 20-30 points max.
So, for example, someone like Messi:
Had a maximum in natural skills, let's say=80 skills in technique and dribbling.
And then, over time, he was learning, listening to coaches and improved to a level 100/100.
So: 80 in natural skills and 20 in learning over time.
Or someone like Xavi:
His natural passing skill is crazy, again, let' say 80.
And then, over time, with a help from coaches, more playing time, experience and IQ, he improved his passing skills to a level 100/100.
So, again he had 80 skills from a natural talent and 20 skills from learning.
Now, let's take Gumbau now, for example.
His natural passing skill is not 80, like Xavi's.
Let's say that his natural passing skill is only 50.
That means, that over time, NO MATTER HOW MUCH he will try to learn, he will never surpass Xavi, as long as Xavi won't turn into an irresponsible idiot who will ruin his career.
Or a winger, like Malcom, who is not that good at dribbles.
Let's say that his natural skill in dribbling is 50 or 55 (Messi had 80).
That means that Malcom can slightly improve over time and make his dribbles more effective due to coaches, IQ, experience.
But even with learning, he will never surpass a skill level of 70 or 75.
Which means that Malcom with 10 years of learning and improving=will have weaker skills than some NATURALLY gifted winger aged 18.
In that sense, when you talk about Arthur (or any other player, like Semedo, Malcom etc): they will improve.
Of course that they CAN improve.
But only slightly.
If they are naturally shit or average at some skill, they will never become world beaters in that skill.
They can only turn from shit into average/playable in that skill.
Now, videos, Riqui Puig.
I am not saying that he will make it since he has some other deadly flaws.
But regarding his attacking-passing game, look at Puig's natural instincts.
When he receives the ball, the first area of a field where he is looking at is: an area around the box, but in the centre, NOT looking at fullbacks or looking back at a pivot of defenders.
So, Puig's instinctive idea/urge no1 is: play the ball as closer to the box as fast as possible.
And THEN, only if the options aren't good, he will make a sideway pass.
On the other hand, when Arthur receives the ball, look at where his head and eyes are aimed usually:
His first instinct is: a safepass and looking whether a pivot, fullbacks and defenders are "free" so that he can pass to them.
Looking forward and towards the box is Arthur's 2nd or 3rd choice idea.
So, Puig:
1. his natural instinct every time when he gets the ball is: pass the ball forward as soon as possible
2. and his conscious brain tells him: slow down (as a conscious effort)
Arthur:
1. his natural instinct is: play a safe pass, look at where Busi, Alba or defenders are
2. and his conscious brain tells him: wait, don't do that. Try to look forward, maybe there is someone free around the box.
So you see, imo, to Puig and similar players (Xavi, Iniesta, Coutinho)=forward passes are in their blood and in their instincts.
With Arthur and Rakitic for example, they aren't.
Now, look at the video:
Puig, who played only 100 minutes for a first team, and how his instincts work when he receives the ball (and try to look at where is he looking at as a first option when he receives the ball):
https://www.youtube.com/watch?v=lcs9GWHCi4M
Then the same match, Arthur.
Now try to look where is he looking at when he receives a pass. He is not looking forward, he is always looking for a backpass or a sideway pass option as a natural instinct:
https://www.youtube.com/watch?v=13hXlx0HhOQ
So, when you guys say:
EV instructed him to play backpasses, lol:
Not true.
A kid Puig is getting a freedom, and Arthur is forced to play backpasses? Doesn't make any sense.
Also:
Arthur can surely improve in a forward passing game.
But if natural skill and instincts aren't there, then don't expect wonders and huge improvements in that area.