If Aurelien Tchouameni could retake one decision in his life then it would obviously be where he sent that penalty when he was up against Emiliano Martinez in Qatar.
But Jurgen Klopp would rather it was something else.
Because, somewhere out there, there is a world where Liverpool got hold of the one and only midfield player they were pursuing last summer, and his presence ensured that the problems that have begat problems this season simply never happened.
