Dani Alves was not happy to leave Barcelona. In fact he seemed very bitter about the whole thing. But the board didn’t want him, and Alves felt disrespected. After 8 years at Barcelona, he went to Juventus.
Barcelona had two players in mind to replace him - Sergi Roberto and Aleix Vidal. Roberto started strong as a right-back but never felt comfortable, played some poor games, and now has been shifted back to a midfield player. Vidal started poorly, then found his groove, then got injured.
The Catalans basically have no right-back at the moment, while Juventus have a plethora and Alves is the best of the bunch. That disparity was not the only factor, but it felt poignant as Juve beat Barcelona 3-0 in the first leg of their Champions League clash.
With the benefit of hindsight, did Barcelona make a mistake letting Alves go? Or was the mistake not signing another replacement? Or was it just bad luck with Vidal’s injury?