The Dutch playmaker, who retired in 2019, enjoyed the best spell of his career under Mourinho, in a side which won the Champions League, Serie A and the Coppa Italia in 2010.
"He knew how to handle us so well. He said, 'I give you guys more freedom than you are used to and, in return, I get a better team'," Sneijder said.
"During games he demanded everything from us. But away from the pitch he gave us a lot of space. Drinking wine, fags… I am sure he knew that we were doing this stuff."