- Paris Saint-Germain face Barcelona at the Nou Camp on Wednesday night
- The French champions hold a 4-0 lead from the first-leg at the Parc des Princes
- Unai Emery is hoping to lead PSG to a fourth straight quarter-final appearance
- Paris Saint-Germain trained together on the Nou Camp pitch on Tuesday night 20.45
Emery has not lost a European knock-out tie since April 2012 and his three successive Europa League triumphs with Sevilla encouraged PSG's billionaire chairman Nasser Al-Khelaifi to appoint him as coach last year in place of Laurent Blanc.
Blanc is the most decorated coach in PSG's history, winning three consecutive Ligue 1 titles at a canter, but Al-Khelaifi grew tired of the Frenchman's failure to get beyond the Champions League quarter-finals three years in a row.
PSG thrashed Barcelona 4-0 in the first-leg of their Champions League last-16 tie in Paris
Unai Emery is now hoping to mastermind a famous victory over Barcelona at the Nou Camp
Paris Saint-Germain trained together on the pitch at the Nou Camp on Tuesday night
Germany international Julian Draxler attempts to bring the ball under his control
Former Real Madrid forward Angel Di Maria scored during the first-leg at the Parc des Princes
Emery has struggled domestically, however, with his side second in Ligue 1, trailing leaders Monaco by three points.
The Spaniard suffered four league defeats in his first five months, double the number of games Blanc lost in his entire final season, although the tide has turned his way since the new year, boosted by the signing of forward Julian Draxler.
PSG have won 13 of 15 competitive games in 2017, including hammering arch-rivals Marseille 5-1 away and thrashing Barca, a game midfielder Blaise Matuidi called the best performance since he joined the club in 2011, the same time PSG were taken over by the Qatari Investment Authority.
Paris Saint-Germain's players hug each other as part of the training session on Tuesday
Unai Emery had only beaten Barcelona once in 23 attempts prior to the first-leg in France
Thiago Silva, Angel Di Maria, Maxwell and Marco Verratti share a joke during training
PSG's only continental trophy is the 1996 European Cup Winners Cup and knocking out Barca, who have won the Champions League four times in the last 11 years, would represent their greatest European triumph under the Qatari owners.
Emery had faced Barca 23 times before the first leg and only won once, but he handed out a tactical masterclass to opposite number Luis Enrique, straying from his usual 4-3-3 formation to deploy a 4-2-3-1 shape which gave his side control in midfield.
Adrien Rabiot ran Sergio Busquets ragged while Marco Verratti outpassed Andres Iniesta, leaving livewire wide forwards Angel Di Maria and Draxler to take turns in cutting the five-times European champions apart.
No side in the European Cup's 61-year history has progressed after losing a first leg by four goals, although Barcelona coach Luis Enrique was beaming with optimism in his pre-game news conference.
Uruguay international Edinson Cavani has been in sensational form for PSG this season
Julian Draxler (left), Edinson Cavani (front) and Angel Di Maria sprint on the Nou Camp pitch
All three players are likely to start in midweek as PSG look for a famous victory over Barcelona
'We have nothing to lose and everything to gain, and if a team like PSG can score four goals than we can score six,' he said.
PSG trained together at the Nou Camp on Tuesday night and Emery insists he's taking nothing for granted against the Spanish champions, despite his side's four-goal advantage.
'I have the same confidence in my team as before the first leg and the same respect for Barca,' he said.
'If I've learned anything from football it's that you should always respect your rivals, but we have a lot of confidence in ourselves, and this tie could be another step for us.'