Carlos Queiroz's relationship with Iranian officials has been fractured throughout his seven-and-a-half year tenure, and is yet to sign a new deal.
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John Duerden takes a look at lessons all the AFC nations learned from the 2018 World Cup and what needs to be done in the coming weeks and months.
The World Cup has been superb on the pitch but equally brilliant off it thanks to the rich, vibrant and merry travelling fans who came to party.
He failed to score a single goal in Russia and claims criticism he received has made his mother's illness worse.
Iran coach Carlos Queiroz said there is more to football in Portugal than Cristiano Ronaldo after the player decided not to speak to him.
For the official working as VAR, the standard has to be higher. Fans are surely already sick of and confused by the phrase clear and obvious.
Cristiano Ronaldo had a penalty saved, and VAR handed Iran a spot kick of their own, but Portugal emerged from the group stage following a 1-1 draw.
Result meant Portugal finished second in Group B and sent Iran out of the tournament.
Spain and Portugal can't afford to lose or they could miss out on the knockout stages from Group B. Uruguay beat Russia for Group A's top spot.
Iran coach Carlos Queiroz criticised VAR on Sunday and said it has left many fans sitting in the stands scratching their heads.
Iran versus Portugal features a rather bad-blood, personal contest between Ronaldo and the man who stands in his way of greatness, Carlos Queiroz.
Fans in Russia, as well as the progress made in Saudi Arabia, have proved that a removal of the ban in Iran is long overdue.
Portugal will be heavily dependent on Cristiano Ronaldo to see them through against a stoic Iran side in their final Group B match on Monday.
Women in Iran were permitted to enter a stadium for the first time since 1979 as fans gathered to watch the national team play in the World Cup.
Iran coach Carlos Queiroz denied his players faked getting hurt during their defeat to Spain on Wednesday.
A member of the Iran national team staff was hospitalised Wednesday after the team was denied a goal after video review against Spain.
Fortune shined on Spain as a fluke goal gifted them a 1-0 win over Iran and put La Roja on the verge of moving to the World Cup's knockout stage.
Spain battled to a nervy 1-0 victory against Iran with Diego Costa registering the only goal in their second Group B match on Wednesday.
Spain play Iran looking for their first win. Uruguay are through and Saudi Arabia are out, while Portugal top Group B after beating Morocco.
Asia's best team have Asia's best coach and together they have grown to become one that can go into the big games against big teams with confidence.
You can be as slick as you want, have all the stars you like, but one slip in the group stages can prove costly in the World Cup.
Spain came through a tough World Cup opener against Portugal in impressive style as the aftershocks of the sacking of their coach were still there.
Following his team's 1-0 World Cup-opening win against Morocco, Iran's Karim Ansarifard said, "what Nike did to us was very wrong."
Iran won their first World Cup match since 1998 as a 95th-minute Aziz Bouhaddouz own goal gave them a 1-0 win over Morocco.
Portugal and Spain renew acquaintances, while Mo Salah and Egypt face Luis Suarez's Uruguay on World Cup Day 2. Follow live with ESPN.