Sunderland have assured fans that the "Mignolet millions" will be reinvested in the team.
Belgian international goalkeeper Simon Mignolet joined Liverpool last night for a fee that could eventually rise to more than £10 million.
The Black Cats have released a statement in which Head Coach Paolo Di Canio said he would like to assure fans there is a huge amount of work going on behind the scenes.
He said Sunderland want to build a competitive squad and that the Mignolet deal gives them further scope to strengthen the side.
Sunderland goalkeeper Simon Mignolet has completed a big money transfer to Liverpool this evening, June 25.
The 25-year old Belgian International was the Black Cats' outstanding performer last season.
He has moved to Merseyside for an undisclosed fee, which is thought to be in excess of £10 million.