Arsene Wenger has revealed he was "very sad" when Serge Gnabry decided to leave Arsenal in 2016.
The German winger had joined the Gunners youth system in 2011 from Stuttgart but struggled to establish himself in the first-team with only 18 appearances to his name.
After a failed loan move to West Brom in 2015, Gnabry joined Werder Bremen permanently in 2016 before linking up with Bayern Munich one year later.
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The now 25-year-old has gone on to star for the Bundesliga giants and scored a crucial double as Bayern defeated Lyon in the Champions League semi-finals on Wednesday, with Wenger quick to point out the performance of his former protege.