Arsenal have completed the signing of Brazilian defender Gabriel Magalhaes from Lille for 26m euros (£23.14m).
The 22-year-old, a left-footed centre back, made 34 appearances in all competitions for Lille last season as they finished fourth in Ligue 1.
He joins the Gunners on a long-term contract.
“He is a player we have been studying for a while and he was in demand from many clubs,” said Arsenal technical director Edu.
“Gabriel is a player of high quality and Mikel (Arteta) and his coaches are looking forward to integrating him into the club.”
Arsenal boss Mikel Arteta said: “We welcome Gabriel to Arsenal. He has many qualities which will make us stronger as a defensive unit and as a team.
