Watford are close to signing Marseille defender Brice Dja Djedje, Sky sources understand.
A fee of around £2m has been agreed between the clubs as Hornets' boss Walter Mazzarri prepares for his first season managing in the Premier League.
Djedje will discuss personal terms and take a medical with Watford, who hope to conclude the deal this week.
If he makes the move to Hertfordshire, the 25-year-old would be become the fourth player to join the club during the summer transfer window.
Isaac Success signed for a club-record fee in the region of £12.5m at the start of July, while central defender Christian Kabasele joined from Belgian side Genk.
Striker Jerome Sinclair has arrived from Liverpool, while Colombia full-back Juan Camilo Zuniga has made the move to Vicarage Road from Napoli, initially on a season-long loan.