Arsenal’s technical director Edu has personal experience of working with Willian closely.
And he is confident the Brazilian will have a positive impact on Arteta’s squad.
“I know him very well, since a long time ago because we’ve been working together for the Brazilian national team and of course I was following him because he played for another club.
“He has a lot of fantastic attributes as a person, as a football player of course, his character.
“I’m 100 per cent sure that everybody in the dressing room, the fans, myself and Mikel will enjoy having Willian in our side.“