In an interview, he expressed his happiness with the club and the city, stating, "I feel great at the club and the city. After speaking with Mikel Arteta, I was sure I wanted to come here."

Mosquera acknowledges that the competition for starting spots in central defense is intense, with William Saliba and Gabriel Magalhães ahead of him.

However, he appreciates the team dynamic and the support of his Spanish-speaking teammates, who have helped him adapt to the new environment.

Mosquera understood that competing with top players was part of the club's strategy to foster competition for playing time in every position.