Izumi's professional career took off in 2007 when he joined Kamatamare Sanuki, a Japanese football club competing in the J3 League. Over the next several years, he established himself as a key player, showcasing his exceptional vision, passing range, and technical ability. His impressive performances caught the attention of larger clubs, and in 2012, Izumi made the move to Tokyo Verdy, a well-established team in the J2 League.