Mazinho has revealed Valencia striker Rodrigo Moreno has several offers to leave this summer.
Mazinho and Adalberto (Rodrigo's father) have known each other for a lifetime. The former Brazil international's children, Thiago and Rafinha, have grown up with Rodrigo to form a familial bond between them.
"You never know, Rodrigo is very appetising in the market," he told Radio MARCA.
"He has renewed the contract this season and he has a significant clause, but football is changing in a spectacular way and you never know what can happen at the end of the season."
Mazinho added: "With the arrival of Marcelino, he has managed to take advantage of Rodrigo's characteristics very well.
"He has pushed him in the best possible way and the result is this, a Rodrigo that can make each ball he touches turn into a goal.
"Rodrigo is a player who is in a sweet moment and is able to play his style while achieving all the team's objectives."