Jijantes FC reports Claudio Curti, Foyth's agent, was at Barca's training centre this morning for talks with their sporting director Mateu Alemany.
Barca are in the market for a versatile defender and Foyth's ability to play at centre-half and right-back fits the bill.
Villarreal will be reluctant sellers, though Barca believe they can tempt them with a bid of €25m.
For his part, Foyth is excited by the prospect of joining the Blaugrana. However, there will remain a battle with Villarreal's board which have little interest in parting with the Argentina international.