FCB1987
Banned
Except this isn't how the season played out at all. You can't talk about a manager's squad and only count the gala XI that we rarely if ever got to actually use.
We spent most of the season with Messi injured, the second half of the season we lost three competitions not with Valdes, but with Pinto in goal, our CB lineup was so butchered with injuries without any solid backups that we were forced to watch either Adriano at CB or play a usually ignored Bartra, Sanchez and Neymar weren't producing the goods in front of goal most of the time (Neither was Pedro, who was the one actually starting, not Sanchez) and we had to rely on Messi most of the time (Who once again, was injured for huge chunks of the season), and Cesc wasn't any more effective than Gomes or Paco most of the time as well.
Valverde has a solid player and backups for every position but LB and possibly striker if you refuse to move Messi to the center. Tata had a bench that was almost entirely Barca B rejects and failed transfers. If Tata had the options Valverde has I can almost guarantee you he wouldn't be losing to fucking Girona and Leganes of all teams.
Players underperforming is partly due to the manager as well. Neymar and Sanchez both had far better seasons in the year after Tata left, so it wasn't like he had no talent to work with. Cesc was also world class for the first half of the next season