Multiple sources are reporting that Sunderland have added Oscar Mingueza as one of their top transfer targets. The Celta Vigo defender is rumoured to be attracting attention ahead of the next transfer window, with insiders claiming preliminary talks could soon take place. Como, Atalanta and Fulham may look to intervene if talks continue without resolution. Neither Celta Vigo nor Sunderland have been linked with any additional targets at this stage. Looking for Sunderland transfer rumours? Follow us on Twitter @PlayerSwitchCom for more rumours just like this.