It will not help with receiving passes or high balls.
You really do only consider juggling the repetitive motion of typical juggling. You can juggle the ball high and control which is pretty much exactly like controlling a high ball out of the air.
To practice receiving a high ball while training alone simply kick the ball high or bounce it off a wall and stop the ball dead. Repeating this is far more effective. No need to repeat juggling.
So I'm guessing that you either have to kick the ball high in the air without lifting it juggle or you must use your hands? Wouldn't it make more sense to just juggle the ball for a few touches than play it in the air to practice that? I do agree that a wall can be a great training tool, but it's not every field that has a random wall there. Well, juggling may be a way to make up for you lack of a wall.
Btw redsforlife, there is a clear difference between juggling and passing the ball in the air to a teammate. So the Barcelona video is a passing drill. It mostly requires teamwork, accurate placement of ball towards a teammate and quick reactions. I bet many of those guys cannot even juggle 50 on head or feet. The link with solo juggling and this passing drill is far too small to mention.
So you really think there is that much of a difference from a little touch to a teammate out of the air than juggling individually? Well, if your definition of juggling is that strict, I guess you are correct, and my entire team and coaching staff for the professional indoor team I played with is wrong. Also, did you really just say that many Barca players cannot juggle more than 50 with their head or feet? I'm sorry, but this is just flat out retarded. I doubt there is a player on the Barca U12 team that cannot do this, maybe a goal keeper can't, but all field players definitely.
The Maradona video is just a warm-up and nothing more. Where did Maradona say that juggling is "great to improve football skill"?
I really have to find an actual quote from Maradona where he said this? How come I'm required research, and you can just say whatever comes out of your ass? Maradona's legacy alone speaks for this. You do realize many people consider him the 1st freestyler? He didn't just practice this for shits and giggles. He practiced it, because it helps him at football.
The motion and technique in juggling is very different to the motion used in volleying. The ankle flex, body position and swinging motion are all different. Again the link with juggling and volleying is far too small to mention. So to get better at volleying and learn the area of the foot to use in volleys you should repeatedly practice volleys.
You don't think through your arguments very well do you? Think of what juggling is. It's more or less many small volleys over and over again. Obviously, if you wanna practice volleyed shots, you should practice volleyed shots just as you would practice any type of volley. Now, when you juggle, you can practice connecting with the proper part of the foot for the volley. It should be the same part, and you can juggle and volley with all surfaces of the foot. This only teaches the timing and connection necessary to execute a real volley.
Furthermore, I asked you to tell me why you are the say all on what drills and practices can help for football. Please, send me your resume. It must be littered with clubs throughout Europe, coaching badges, and awards.