Cardiff have strengthened their squad with the signings of Will Vaulks, Joe Day and Curtis Nelson.
Midfielder Stuart O'Keefe has been snapped up by Gillingham on a two-year contract after his recent exit from Cardiff.
Former Liverpool star Steve Nicol has urged boss Jurgen Klopp to sign Cardiff keeper Neil Etheridge as Simon Mignolet's replacement.
Middlesbrough and Sheffield Wednesday are reportedly vying to sign winger Kadeem Harris when his Cardiff contract expires on June 30.
Liverpool have been linked with Neil Etheridge but the latest reports claim the Cardiff keeper is not a target for the Anfield club.
Omar Bogle has confirmed that he would be willing to return to Portsmouth if Cardiff make him available this summer.
Aston Villa will reportedly increase their efforts to sign Cardiff keeper Neil Etheridge after failing with an initial £8million bid.