Playmaker moves to Saudi outfit from South Korean Seoul, where he spent his last year and clinched Korean title.
Former Navbakhor, Pakhtakor and Bunyodkor midfielder played 31 matches in K-League and scored one goal.
Server Djeperov will play at Al Shabab under Belgian head coach Michel Preud'homme, who was appointed in June.
According to preliminary estimates, the sum of transfer made up about US$8 million. Task of the Saudi club in new season is to improve result of previous season, when club claimed the fourth place and was eliminated in last 16 of the AFC Champions League.
Server Djeperov said that his move to Saudi Arabia is step forward. He said that he was first Uzbekistani player in South Korea and later Timur Kapadze (Inchon) and Alexander Geinrikh (Suwon) moved to Korea.
He said that it will be interesting to play under such famous coach. He said that he will join new club in Germany in late July after the match between Uzbekistan and Kyrgyz Republic within the 2014 FIFA World Cup.