The Championship side now hope to sign Stuart Dallas instead.
They claim that Leeds have given up on the player, after seemingly agreeing a move for Brentford star Stuart Dallas.
The report goes on to make it clear that Leeds were in pursuit of the player this summer, but several issues got in their way.
Firstly there were his wages. Just 12 months on from a Premier League move the former Brighton and Hove Albion star is on a good packet on Wearside, which Leeds could not afford.
The report also claims that Leeds would not meet the reported £1.5 million price-tag for the player.
Leeds have been strongly linked with Northern Ireland international Dallas over the past 24 hours, which would seemingly conclude their winger hunt.
The club played full-backs by trade Sam Byram and Charlie Taylor on the wing last campaign because of a lack of wide options and bringing in reinforcements in that area was Rosler’s primary recent concern.
Buckley joined Sunderland last summer, matching up with his former Brighton boss Gus Poyet at the Stadium of Light.
However, he struggled to impress, playing just 25 times for The Black Cats last season.