Sky Sports sources understand that Manchester United defender John O'Shea is having a medical at Sunderland.
The experienced O'Shea has spent his entire career at Old Trafford, but could now be ending his 13-year association with the club.
The Republic of Ireland international is currently in the North East and he could finalise the switch before the weekend.
Sunderland are understood to have launched a triple £12million raid on United this summer in their pursuit of O'Shea, Wes Brown and Darron Gibson.
It has already been a busy summer for Sunderland following the acquisitions of Keiren Westwood, Sebastian Larsson, Craig Gardner and Connor Wickham.
O'Shea could be the second Red Devil to join this week after Brown had his medical and he is expected to be unveiled on Thursday.