Saiz was accused by Port Vale boss Michael Brown of spitting in the face of one of his players during last week's Carabao Cup clash.
George Honeyman netted his first career goal for Sunderland as his side progressed to the second round of the Carabao Cup.
Brentford, Ipswich, Bristol City and Charlton were all given away ties having initially thought they were at home.
Academy graduate George Honeyman scored his first senior Sunderland goal in the 1-0 Carabao Cup victory over Bury.
Leeds United eased into the second round of the Carabao Cup as Samu Saiz netted a hat trick against Port Vale. Aston Villa also advanced.