The Chelsea academy lost one of their more talented prospects this summer to a Premier League rival. Rio Ngumoha has left the club in favour of a move to Liverpool, with John Terry believing the Blues have let go of a seriously promising player. It has been very clear that one of the keys of the new ownership has been to bring in a plethora of young talent before their elite rivals. READ MORE: Fabrizio Romano says Premier League club are sure they have signed a ‘super talent’ from Chelsea this summerDespite the reported rift between Todd Boehly and Behdad Eghbali at the helm of the club, there…