Arsenal boss Arsene Wenger admits he was keen to keep Serge Gnabry, but the winger rejected a new deal at the club to sign for Werder Bremen.
The Germany Under-21 international had entered the final year of his contract at the Emirates Stadium and the Gunners were hoping to sign him to new terms.
However, Gnabry – who featured for his country at the 2016 Olympics in Rio last month – opted not to commit his long-term future to the north Londoners and returned to his homeland instead with Die Werderaner.
Wenger was disappointed to see the 21-year-old go and insists the Premier League club agreed to a reluctant sale in the end.
"We didn't want to get rid of Gnabry, we wanted to keep him," the Frenchman told BT Sport.
"But he was in the last year of his contract. We were close to extending his contract but finally he changed his mind and went to Werder Bremen.
"But I think we taught him a lot and I think if you ask him he would agree with that."