There is a version of Paris Saint-Germain that exists in the popular imagination: the assemblage of galácticos, the dressing room of egos, the team that wins matches but loses dressing rooms.

Luis Enrique's side is not that. It might be the opposite of that. Bradley Barcola is twenty-three. Désiré Doué is twenty. Warren Zaïre-Emery is nineteen. The tactical demands are punishing. The collective output is electric.

For years the question about PSG was who they would buy next. Now, oddly, the question is which of their own they will eventually be unable to keep. It is a much better question to have.