The 28-year-old goalie has cancelled his contract with Portuguese club Maritimo following disagreements with the coach.
Haghighi started his playing career at Persepolis in 2006 at the age of 16.
He joined Rubin Kazan of Russia in 2012 and then moved to Sporting Covilha on loan. He has also played for Portugal’s Penafiel.
Haghighi represented Iran national football team in the 2014 World Cup and showed a decent performance against Argentina in group stage.
Port Vale Football Club is a professional association football club based in Burslem, Stoke-on-Trent, England.
The team competes in League One, the third tier of the English football league system.