The midfielder is set to announce his decision on his future after the Confederations Cup, where he is representing Brazil.
“Besides the signings we also suffered harassment of the top clubs in the world on some of our key players,” read a club statement.
“We make every effort to keep them, but we have to evaluate the good proposals and understand the goals and aspirations of life of each of our athletes.
“With the imminent departure of Paulinho we trust in football other players that are being prepared for some time, as William and Edenilson, or even the newly hired Ibson.”