Mauricio Pochettino knew Mikel Arteta would be a great coach after seeing him call the shots at Paris Saint Germain when he was just a teenager.
The duo, who became PSG teammates in 2001, will face each other as managers for the first time on Saturday.
Despite the 10-year age gap they quickly struck up a bond with Arteta describing how Pochettino treated him like a little brother and calling Chelsea's head coach a role model.
Pochettino, meanwhile, described Arteta as family and spoke of his love for the Arsenal boss.