Imo, that is one of the problems, but not THE ONLY problem.
In some matches, like against Roma away, true, we couldn't create anything and someone like Arthur might have helped.
But even in matches where we CAN create chances, our chances on a CL level are so sterile and predictable.
So:
1. sometimes we struggle under pressure and can't create anything
2. but even if we avoid a pressure (let's say: having 3 Arthurs on a field): what then?
Our attacking plan is a total shit:
1) pass the ball around the box till death and waiting for a hole to open, which rarely happens against Juve, since they are NOT Getafe
2) passing the ball to Messi in every single action, which big teams like Juve/Atletico/Bayern can neutralize quite easily
3) and our other random, chaotic solo actions are:
= pass the ball to Messi and hope that he will dribble past 3 players and score
= (when we had Neymar): pass the ball to Neymar and hope that he will dribble past 3 players and score
= Messi passing to Alba, and Alba crossing into a box or sending a hard, low cross in the middle and hoping for the best
Basically, that's the whole Barca's gameplan.
It works in La Liga against Mickey Mouse teams like Getafe, Girona, Leganes and similar.
In a CL, we are knocked out in the same way since 2013'.
Now, after reading my post from above, where our only attacking ideas are:
1. passing the ball around the box and waiting for a hole to open
2. waiting for Messi's solo action
3. waiting for Neymar's solo action (insert Dembele now)
4. Messi's pass to Alba
Regarding 1, 2 and 3:
1) Juve and Atletico will park a huge bus and we won't be able to create good chances
2) Messi will be man marked by 2-3 players every time he gets the ball, and those guys will be EXTREMELY close to him whenever he gets the ball (unlike La Liga defenders who give him more space and time).
And Messi will be pushed, fouled or tackles in almost every action and he will be out of play. And then, he'll sulk and get sad, as always.
3) Neymar/Dembele, the same story
Now, watch these videos against Juve 2017 and Atletico 2016.
And try to find more than 2-3 actions over 180 minutes where we tried something different and unpredictable.
You can't.
We are doing the same slow, predictable shit over and over, and all big clubs/their coaches/coaching team/scouts know our 3-4 main moves and they are neutralizing us easily.
Now, enjoy the videos and watch the most predictable big team (attacking wise) on a CL level, Fc Barcelona in the last few years.
Btw, people are calling for more "controlling", off the ball movement, triangles.
Fine, that will bring more control.
But that is only a part of a problem.
1. we have problems in avoiding pressure from the opponents
2. once when we achieve that, we have problems in controlling the match
3. once when we achieve even that, we don't have any attacking ideas. So, Arthur won't help too much. Removing Rakitic won't help either. We still won't score shit in attack:
Juve 2017: Doesn't this look like a deja vu, and like watching any quarters of a CL over again? It does to me. We are always neutralized and sterile in the exactly the same way:
Atletico 2016: