Arsenal was not lucky enough during this season and they recently lost their player Mikel Merino who he joined this team just a few days ago. Mikel Merino was the player Arteta wanted to hire him and he tried to get Mikel Merino ready for the games in this season.
He left Real Sociedad and started playing for Arsenal to have the chance to play in strong teams. But in the first training session in Arsenal, he got injured and it seems Merino's going to be out for 2 months.