Leandro Trossard has chosen the number 19 shirt as an Arsenal player after his move to the Emirates Stadium was signed-off.
The Belgian winger completed a £27m move from Premier League rivals Brighton on Friday afternoon. Speaking after his switch was rubber-stamped, he said: “I’m really excited to get started. This is a big club and I’m ready to show the fans what I can do.
"Everyone has seen how well we’re doing already and I’m here to help achieve their dreams - including myself. I’m going to take it day by day, work hard and try to help the team to achieve their goals.