At a young age, he joined the youth department of Hapoel Jerusalem F.C., where he played most of his professional career as a center-back defender.

[9] In 2007, Dahan negotiated the transfer of Gili Vermouth from Hapoel Tel Aviv FC to KAA Gent and Salim Tuama from the same team to Royal Standard de Liege.

[11] He continued to work mostly in Israel and Belgium and Rami Gershon (Royal Standard de Liege), Eytan Tibi (Charleroi SC) and Omer Golan (K.S.C.

[12] Beram Kayal also moved from Maccabi Haifa in 2010, joining Scottish club Celtic in a £1.2 million transfer deal.

[16] Also in that year, Wisla Krakow recruited the first Israeli player in Poland from Hapoel Beer Sheva, Maor Melikson, who was bought in 750,000 Euro.

Later, another Israeli player, Dudu Biton, joined Wisla Krakow, who later moved to Royal Standard de Liege, Apoel Nicosia (Cyprus) and NK Maribor (Slovenia), as Dahan represented him in all of those transfers.

Before Biton came to Wisla Krakow he was one of several Israeli players who signed for Charleroi SC: Tamir Kahlon, Matan Ohayon, Eitan Tibi,[17] and Hatem Abd Elhamed.

In August 2012, Nigerian international defender Efe Ambrose became the second player represented by Dahan to join Celtic, when he moved from SC Ashdod to Scotland.

[19] In summer 2013, Dahan negotiated the signing of Israeli coach Guy Luzon from the U21 National team of Israel to Royal Standard de Liege alongside Center Back, Tal Ben Haim.

The captain of the U21 National Team of Israel, Nir Biton, moved on a 1 million-euro deal from SC Ashdod to Celtic FC.

[22] In 2016, Dahan negotiated the transfer of Portuguese Orlando Sá from Maccabi Tel Aviv to Royal Standard de Liege.

[29] Dahan orchestrated one of his biggest the deals in 2019: The transfer of Samuel Kalu to FC Girondins de Bordeaux for €9 million.

[36] Also that year, Dahan represented Osher Davida in his transfer from Hapoel Tel Aviv to Royal Standard de Liege.