It is the nature of running an academy that football clubs win some and lose some.
Barely a game goes by without Jamal Musiala doing something which must leave some at Chelsea wondering what might have been for the one that got away in 2019.
Most recently, the now Bayern Munich starlet was shining at the World Cup with Germany, doing all he could to carry the hopes of a nation on his slender shoulders.
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Tino Livramento may also have been in with a shout of a World Cup place with England too had he not suffered a serious knee injury which halted his exciting rise at Southampton since leaving Chelsea last summer.