According to Chalkias, the deal would have been completed quickly if Hugo Viana, a former Sporting director of football, was still at the club.
Chalkias also criticized Sporting for not showing Gyokeres the respect he deserved, considering the player's achievements and sacrifices.
Despite facing complications, Chalkias clarified that Gyokeres was committed to joining Arsenal from the start, despite other top clubs showing interest in him.
Gyokeres had reportedly been offered to Real Madrid and Manchester United, but he chose to join Arsenal to fulfill his long-term goals with the club.
The transfer is seen as a positive sign for Arsenal, as Gyokeres' loyalty to the club from the beginning is a testament to his commitment to the team's project.
Manager Mikel Arteta will be hoping that Gyokeres can replicate his form in the Premier League, where he will be in his prime.