Ronie's brother and agent, Roberto de Assis, said: "Back to Gremio in 2011? Why not?
"It is too early to talk about it now."
Gremio president Duda Kroeff held a round of talks with De Assis and revealed: "It is clear that we would like to have here again Ronaldinho.
"The doors for him here will always be open during my management. There is no need to knock."