Leicester City target Gabriel Barbosa and the highly rated Thiago Maia have been discussed in meetings between Santos and officials from Chelsea, Manchester United and Atletico Madrid.
The Brazilian club are feeling out the market for two of their most coveted young players. Barbosa has been subject to a £23million bid from the Premier League champions, while there is also interest from Inter Milan, Juventus and Barcelona.
Maia, a defensive midfielder, has played 44 games for the Brazilian giants since making his first team debut in 2014.
'We had productive conversations,' Santos president Modesto Roma said to Goal.