Juve is definitely above Barca, and PSG. No question.
Juve problem in midfield, in my opinion, was stamina. We did well against Real for 55 min, then had no juice left.
Matuidi should fix that when you need somebody to run, and tackle in late game since he's never tired.
Barca's midfield is bad, but should be better if they get coutinho, and if Busquets body condition doesn't take a nosedive in april/may.
PSG right now didn't sign anyone in midfield, and sold Matuidi. Motta is one year older, and can't run anymore, and Verratti must a bad clone because he plays like a very average ligue 1 midfielder.
If PSG fails to sign an impressive 6, their midfield is even more $#@!ed up than last year.