Wreh signed for Arsenal in the summer of 1997 for £300,000, linking up with his former manager at Monaco, Arsène Wenger. Although fourth choice behind Ian Wright, Dennis Bergkamp and Nicolas Anelka, Wreh still played an important part in the Gunners' Double-winning 1997–98 season. Wreh scored in 1–0 Premier League wins against Wimbledon and Bolton Wanderers in March, the fifth in a 5-0 win against Wimbledon, and netted the only goal of the Gunners' FA Cup semi-final win over Wolverhampton Wanderers both in April. Wreh started in the 1998 FA Cup Final, and although he did not score, Arsenal beat Newcastle United 2–0.