He knows the future new PSG coach by heart. Between 2007 and 2009, in Lyon and then in Saint-Étienne, Christophe Galtier cut his teeth in an assistant role alongside Alain Perrin, whom he eventually replaced at the head of the Greens to launch his solo career. Thirteen years after their shared experience, Perrin deciphers the Galtier method, the qualities that led him to Paris and the challenges he will now have to overcome.
