What might the footballing landscape look like if clubs could only field players they had developed through their youth systems and academies? Some parts would like much the same, but others are likely to be drastically different to what we know today.
As club football hits pause for the international break, we've dug through the academy graduate lists of Europe's teams and plotted out what their best XIs might resemble if they could only use their own.
In an effort to ensure we feature largely recognisable names, our criteria is fairly loose: To qualify, a player must only have spent two years at the club in question before the age of 21.