Nourollahi had been linked with a move to European clubs but opted to stay at Persepolis.
On Tuesday, he extended his contract for two more years.
The 26-year-old defensive midfielder has been a key player in Persepolis, helping the Reds win the Iran Professional League in the last three seasons.
Iran coach Marc Wilmots called up Nourollahi for the match against Hong Kong at the 2022 World Cup qualifier, where Team Melli defeated its East Asian rival 2-0 at Hong Kong Stadium.