Three years on from their last encounter in the round of 16, a new chapter in the rivalry between Paris Saint-Germain and Barcelona will be written on Wednesday when they face each other in the Champions League quarterfinals. This time, there is no Lionel Messi, Neymar or Luis Suárez in either camp, but PSG manager Luis Enrique, a Barça legend, is now going up against his former captain, Xavi Hernández, who is looking to deliver a trophy for the Blaugrana in his last season in charge.