Tadeu joined Persepolis after undergoing a physical exam.
The 28-year-old striker signed 18 months contract with the Reds which keeping him until end of 2015–16 season in the Iranian popular team.
Tadeu has played for Brazilian clubs Cruzeiro Esporte Clube São Paulo, Juventude, Grêmio, Figueirense, Sport Recife and Turkey’s Bursaspor.
Persepolis currently is eighth in the Iran Professional League (IPL).