Chelsea non-executive director Peter Kenyon has been in Lisbon checking up on the services of Benfica winger Angel Di Maria.
Kenyon, who stepped down from his full-time role as chief executive in October, now represents Chelsea on various UEFA and the European Clubs' Association committees.
Reports in the Portuguese media suggest the marketing tycoon has held meetings with directors of Benfica over a proposed move for Di Maria, who is also being courted by Inter Milan and Manchester City.
"It is true I stayed in Lisbon in answer to your question, but I will not offer more details," Kenyon is quoted in Portuguese sports newspaper O Jogo.
"Is Di Maria a footballer of interest to us? I have no comment to make."
It is thought Kenyon has also held talks with the player's agent Jorge Mendes over a proposed summer move to Stamford Bridge with his club said to be holding out for an ambitious €40million (£35million).
Benfica insist they are yet to receive a formal offer from any club and maintain their hefty asking price for the 22-year-old Argentina international is not negotiable.