#2. Marco Verratti
Talk of that front three has eclipsed just how it all started. In Barcelona's arrogant, and ultimately futile, attempt to prise away the best young central midfielder on the planet at the moment - Italy's Marco Verratti.
There's a very good reason Barca were so desperate to sign the Italian playmaker... In the right system, Verratti is unplayable and can make things tick for any team. Sitting deep in the middle of the park, he makes the PSG behemoth run smoothly with his ability to maintain a metronomic rhythm as well as change it up with the occasional defence splitting pass.
He may no longer have the redoubtable Blaise Matuidi next to him, but in Adrien Rabiot he has a youthful central midfield partner that can do the dirty work for him while also retaining the ability to maintain passing rhythm if the Italian is under a touch too much scrutiny.
Besides, when things go down the dark path... who better to call up for assistance than Thiago Motta, eh?