The four European giants are all fans of the Brazilian star and will be monitoring the situation after José Rodríguez Baster 'Rodri' stated that now is the perfect time for him to step up a level.
Alves has attracted interest from across Europe with his dynamic displays for Sevilla and Rodri believes that the club should cash in now.
"This type of player always ends up moving because that is the way that market dictates it," the agent told Punto Radio.
"One has to be realistic and recognise that the best players always end up playing for the biggest clubs.
"I am not saying that Sevilla are no a big club, but they are a level behind some on both a sporting and an economic front.
"It is the right time to sell Daniel and besides, (club president, José María) Del Nido has already said that nobody is indispensable at the club.
"Daniel is happy and the president did everything when it came to renewing his contract the last time."
The 24-year-old, who is renowened for his attacking flourishes, joined Sevilla in 2002 from EC Bahia and won his first cap for Brazil last year.