Birmingham winger Sebastian Larsson and Coventry goalkeeper Keiren Westwood have formally completed their moves to Sunderland after signing three-year deals.
The Black Cats confirmed last week that 26-year-old Sweden international Larsson would be playing his football on Wearside next season, but his move would not officially go through until Friday following the expiry of his contract at St Andrew's.
Republic of Ireland international Westwood also agreed a Bosman free transfer to the Stadium of Light last week, but the move could not be finalised until his contract with the Sky Blues expired at midnight on Thursday night.
The duo join Ahmed Elmohamady, Connor Wickham, Craig Gardner and Ji -Dong-won at the Stadium of Light with manager Steve Bruce having made significant early progress in his rebuilding plan.
Bruce signed former Arsenal trainee Larsson for the Blues for £1million in January 2007 after a successful loan spell, and he went on to make 170 appearances.
However, he did not agree a new contract with last season's Carling Cup winners and, with a series of suitors on his trail, Bruce, who tried to sign him in January, has managed to get his man this time around.
The manager said: "Seb was a fantastic young player for me at Birmingham and he has matured into a very good midfielder.
"He has been courted by a number of top clubs over the summer - both in England and across Europe - so we are naturally delighted that he has chosen to come to Sunderland."
Westwood will battle with Belgian youngster Simon Mignolet for a place in Bruce's starting line-up with £9million man Craig Gordon recovering from a knee injury.