The 28-year-old player has joined Spartak Trnava on a two-year contract for an undisclosed fee.
Ghorbani started his playing career with Nassaji in 2010 and has also played at Iranian football clubs Gahar, Mes Sarcheshmeh and Naft Tehran.
Ghorbani joined Esteghlal in 2016 and scored 18 goals in 68 matches for the Blues. He scored against Persepolis in Tehran derby in his first season in Esteghlal.
FC Spartak Trnava is a Slovak professional football club based in Trnava. Historically, it is one of the most successful clubs in the country, having won both the Czechoslovak First League and the Czechoslovak Cup five times, and reaching the semi-final of the European Cup once and the quarter-final twice.