Sunderland have completed the signing of Portuguese goalkeeper Mika on a two-year deal for an undisclosed fee according to Eurosport.
Per the source, the keeper will join the Black Cats from Boavista following approval from FIFA.
The Portuguese outfit were unable to complete the transfer before the transfer window on August 31 due to technical issues and FIFA deemed the club as having a worthy excuse.
Sunderland boss David Moyes will be breathing a sigh of relief as first-pick keeper Vito Mannone has been ruled out for around three months due to an elbow injury.
Jordan Pickford has been filling in for Mannone but now Moyes will have more cover as a result of Mika joining and he could feature against Everton in the Premier League on Monday.
Mika made 26 appearances for Portuguese minnows Boavista who finished the league campaign last season in 14th place.
Follow Emre Sarigul @Turkish_Futbol