The Sunderland Echo reports that the 24-year-old is set to move to the Stadium of Light on a season-long loan deal.
Sung-Yeung joined Swansea for £6million just 12 months ago, but has fallen down the pecking order at the Liberty Stadium.
The midfielder had been linked with moves to the Championship and the Bundesliga, but now looks set to become Sunderland’s 12th signing of the summer.
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As always it is the so called “big clubs” that have splashed the most cash in the transfer window so far this summer. Manchester United or City? Arsenal or Tottenham? Who are the winners and losers of the transfer window so far?
Being an amiable guy is good for you and Jurgen Klopp is living proof.