The north London side turned to the 46-year-old head coach earlier this week after Arsene Wenger stood down as manager after 22 seasons in charge of the Gunners.
Emery has previously managed La Liga trio Almeria, Valencia and Sevilla to build up a decent reputation in the Spanish top flight.
The 46-year-old led Paris Saint-Germain to the Ligue 1 title in 2017-18 after the capital club saw off competition from defending champions AS Monaco and Lyon.
Arsenal have regressed under Wenger in recent seasons and the Gunners haven’t finished in the Premier League’s top four in the last two seasons.
Ex-Arsenal star Keown believes Emery is a good appointment even if the retired England international would have liked to have seen a former player given a chance.
“I would love to see a former Arsenal player in charge but appointing Patrick Vieira or Mikel Arteta would have been a huge leap of faith given neither has managed in Europe,” Keown told the Daily Mail.
“Gazidis was also impressed by Emery’s analysis of every player and I am intrigued to see how he tries to cure Arsenal’s defensive ills.”
Arsenal lost 2-1 to La Liga giants Atletico Madrid in the Europa League semi-final earlier this month.
The Gunners finished in sixth place in the Premier League table and 12 points behind fourth-placed Liverpool FC.
Arsenal haven’t won the Premier League title since 2003-04.
MORE: Man United latest news
MORE: Arsenal latest news
MORE: Chelsea latest news
MORE: Liverpool latest news