Fulham and Swansea City have agreed a fee of £15m for defender Alfie Mawson to move to Craven Cottage, according to Sky sources.
The 24-year-old centre-back is scheduled to undergo a medical and discuss personal terms on Tuesday.
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The Whites appear to have beaten competition from fellow Premier League sides Burnley and West Ham United for Mawson's signature as they build a squad to compete in the Premier League.
Mawson played in every Premier League game for Swansea last season, but was unable to help save them from relegation.
Mawson has made six appearances for the England U21 side, and was on the bench for the senior team in friendlies against the Netherlands and Italy in March.
He was a youth at Fulham's West London rivals Brentford, and has been recovering from knee surgery this summer.