Iranian international Soroush Rafiei joined Qatar Stars League side Al Khor from Persepolis on a one-year contract last week.
The signing ceremony was attended by club President Hassan Jumaa Al Mohannadi along with team manager Mohamed Ibrahim Al Mansouri and captain Nayef Mubarak.
The 27-year-old attacking midfielder started his career with Fajr Sepasi and helped them to promote to the 2011-12 Persian Gulf Cup and later joined Foolad where he played for four seasons (2011-2015).
But in the following year, Rafiei joined Tractor Sazi on a two-year contract before moving to Persepolis for six months.
The Iranian will join Brazilian international Madson, who has been retained by the club.