#1 He brought a lot of baggage

Vidal's short-fused nature on the field of play also translates into his personal life, and his signing would do little to aid Barcelona in trying to build back its core values and image of being 'more than just a club' (which it has lost with some morally questionable decisions over the years).
Vidal comes with a lot of previous baggage, including multiple fines and suspensions for turning up drunk for both Chile and Juventus during team training, getting arrested for confronting the Police as a U-20 player, initiating and participating in a bar fight, to name a few.
Only two weeks ago, the Chilean appeared in a Munich court over charges of a nightclub battering and assault and was subsequently fined the sum of €800,000.
Barcelona have long earned a reputation of having players who shun the limelight, preferring to do all their talking on the pitch, which led Ibrahimovic to condescendingly label them schoolboys who lined up every morning for assembly.
Arturo Vidal in his short stay at the club has already garnered controversy and faced a backlash from the board for his use of social media and statements to the press with coach Ernesto Valverde even going ahead to say there were some 'issues' with the Chilean although he failed to expatiate on his comments.
Barcelona signed Vidal knowing his history of courting off-field negative attention, and it is hard to imagine the relationship between club and player going south sometime soon.