Risser and Atiku earn deals at Swindon Town
Swindon have signed Namibia international Oliver Risser and Ghana winger Ibrahim Atiku on two-year deals.
Both have been on trial with the League Two club and joined the squad on their pre-season tour of Italy.
Midfielder Risser, 30, has spent most of his playing career in the lower leagues in Germany.
Atiku, 28, who had a trial with Manchester United as a youngster, has most recently been playing for Ethnikos Piraeus in Greece.