 He was loaned to Belgium's KSK Beveren in October 1998 before signing – together with his twin brother Marcin – for R. Excelsior Mouscron for a combined fee of €485,000.Żewłakow went on to become a key player, helping the club reach the 2002 Belgian Cup final.After following coach Hugo Broos to RSC Anderlecht, in his second season he made his UEFA Champions League debut as Anderlecht wrested back the Belgian title from Club Brugge KV.