Ki joins on loan
Sunderland have signed midfielder Ki Sung-Yueng from Swansea City on a season-long loan.
The 24-year-old South Korean international is Sunderland's 11th senior summer signing.
Ki made 38 appearances in all competitions for Swansea last season, and will link up with international colleague Ji Dong-won on Wearside.
Ki joined Swansea from Celtic, where he played 66 times and scored nine goals.
There was reportedly interest in Ki from Everton, a Championship club and a Bundesliga side.