PARIS (Reuters) -When academy forward Senny Mayulu scored the final goal in Paris St Germain’s Champions League final victory over Inter Milan, it felt like more than completing the routof the Italian side.

For the French club, it symbolised a strategic turn. After more than a decade of headline-grabbing signings, PSG are banking on their new 350 million ($403million) training campus to build future squads largely from within.