Daniel Alves admits his release by Barcelona left him unimpressed.
The Brazilian veteran was allowed to come off contract by Barca last week.
He told the Guardian: "I did not leave sad but happy to have returned to the club.
"I dreamed for five years of wanting to relive this second moment. The only thing I didn't like was how my departure was handled.
"Since I arrived, I made it very clear that I was no longer a 20-year-old boy and that I wanted things to be done up front, without hiding anything. But this club has sinned in recent years because they don't care about the people who made history.
"As a fan, I would like Barcelona to do things differently. I'm not talking about myself because my situation was different, although I am eternally grateful to Xavi and the president for bringing me back.
"It is a club full of young people with very good ideas on the field, but they have to improve their work outside. The mentality is totally opposite to the one we built a few years ago. Everything that happens on the field is a reflection of what happens outside."