Redknapp wants a significant change in attitude in the Championship.
"There will be a lot of things changing here over the summer. We'll have the players disciplined from the start," Redknapp said.
"Maybe we had to *****-foot around players when I came in because of the situation this season."
Redknapp's sterner measures appear likely to include tighter guidelines on his players' use of Twitter.
He added: "If they practiced more on the training ground instead of tweeting, maybe they'd become better footballers.
"In terms of discipline it's got to change with some of them. Some of them think they can do what they want, when they want. We don't want people doing silly things. We don't want people tweeting all the time."
The manager wants a significant turnover of players in order to challenge in the Championship.
Redknapp added: "Getting players out will be difficult, but we're not going to give them away. I want players who want to give their all. I think change is needed. We need to freshen up the squad after a tough season.
"You need good characters in the dressing room. We've got some but we've also got some dysfunctional ones too."