Luis Enrique’s side trail the French outfit 4-0 following a first leg humbling in their last 16 encounter.
They will be back at Camp Nou on Wednesday, but there is a lot of work to do if the five-time European champions are to progress.
Barca appear to be up for the challenge, though, if their preparatory efforts are anything to go by.
Jordi Alba looks to be fired up for the fixture, with the Spain international flying into a tackle on Luis Suarez during a one-touch passing exercise.
Luis Enrique may have watched proceedings through his fingers, with Barca eager to avoid any untimely injuries, but will be pleased to have seen his stars come through unscathed.
He now needs a similar level of commitment to be displayed against PSG or attention will be quickly narrowed to domestic matters in Catalonia.