Tony Pulis has blamed Arsenal legend Arsene Wenger for letting Serge Gnabry's talent slip for just £7million.
The German winger endured a difficult stint under the former West Brom manager, 65, in a season-long loan spell at The Hawthorns in the 2015/16 season.
Gnabry, 27, made just three appearances before he was recalled and the Gunners cut their losses selling him to SV Werder Bremen.
He has since gone on to become a world-class performer, winning 12 major trophies with Bayern Munich including four Bundesliga titles, a Champions League and the Club World Cup.