The Spain international has five years to go on his contract but is reported to be eager to leave the club this summer
Atletico Madrid star Saul has not decided on his future and has offers from many clubs, according to his agent.
The midfielder has been an integral part of Diego Simeone's team in recent years, making over 300 appearances in all competitions.
The 26-year-old still has five years left on his contract at the capital side, but has reportedly told the club that he wants to leave.