All who attend the Rayan Cherki show know the ticket comes with a guarantee of entertainment. Enzo Maresca, a manager famed for his obsessive positional control, does not need to put limits on the Manchester City wizard. Cherki has to feel free and he was at his creative best against Crystal Palace, who were in this game before City’s creative heartbeat took it away from them in the second half. It has been a fine start to the former Lyon player’s second year in England. Cherki was inspired aga…