A few minutes later, it was Dembele's turn to join the party in the 63rd minute as he scored Barcelona's fourth goal, thus crowning an inspired and tireless performance.
And Catalan newspaper Mundo Deportivo claim that PSG privately believe Barcelona have encouraged Neymar's decision to leave.
Paris Saint-Germain have reportedly placed a €200m (£188m) valuation on unsettled attacker Neymar.
Barcelona also suggested the possibility of including another player in the deal with midfielder Ivan Rakitic suggested.
Philippe Coutinho set for Arsenal loan from Barcelona
Barca have made Coutinho available for loan in the past fortnight and had fielded interest from Spurs and Arsenal . The Brazil global has emerged as a surprise target for the north London side over the past couple of days.
Carles Alena admits Barcelona players would be hurt if Neymar was to sign for Real Madrid.
A Blaugrana delegation that included Eric Abidal travelled to Paris on Tuesday to meet with the PSG directors and to try to unblock the Brazilian's move to the LaLiga Santander champions. It is not clear if Neymar will be part of the list.
"We are still in talks over moving things forward, to see if he will stay or not", said the source, who added it was important the team "stays focused on the championship".
Barcelona has done its own campaign to get Neymar back during their U.S. tour. No less a figure than Lionel Messi has gone public in Spanish paper Marca, urging the Brazilian not to sign for Real, and the prospect of a reunion with the Argentinian ace is certainly a mouth-watering one. As long as we are in talks - today they exist, while they did not before. Their attacking riches would also give them a real shot at glory in the UEFA Champions League. They want their £206m investment in Neymar paid back in full. Barcelona can take Neymar on loan for the season, before buying him next season. I am the coach.