Chelsea's head of scouting Michael Emenalo is planning to size up Ghana full-back Samuel Inkoom on Tuesday.
Defender Inkoom currently preparing to take on Nigeria at Watford's Vicarage Road as part of the Ghanaian squad.
Inkoom's club, Ukrainian based Dnipro Dnipropetrovsk, will allow the player to leave for £6m.
Fulham and Aston Villa are also thought to be tracking the 22-year-old.