He suffered an ACL injury in the last minutes of the match against Kashima Antlers in the AFC Champions League second-leg final in Tehran’s Azadi Stadium in mid-November.
Ansari has missed the rest of the Iran professional League (IPL) season and will join his teammates from the start of the new season.
The 27-year-old defender has played a key role, helping Persepolis win back-to-back Iran Professional league titles.