Paris Saint-Germain head coach Mauricio Pochettino said his team must believe in their chances after taking the Ligue 1 title race to the final day of the season.

PSG kept their hopes of retaining the league title alive thanks to Sunday's 4-0 rout of Reims, which moved the defending champions within a point of leaders Lille heading into the final round of the 2020-21 campaign.

Neymar and Kylian Mbappe were on target against Reims and PSG will – who face Brest on the last day – only get their hands on the title if they better the result Lille get against Angers, needing Christophe Galtier's team to slip up.

The one point separating Lille (80) and PSG (79) before the final matchday is the smallest gap between a leader and second-placed side at this stage of Ligue 1 since the 2001-02 season (Lens one point ahead of Lyon but the latter ultimately triumphed).

"The most important thing is to believe [in our chances]," Pochettino said post-game.

"But now we have to focus on Wednesday's [Coupe de France] final against Monaco. That's our first objective. Then after the French Cup final we will focus on our game against Brest.

"The important thing is that we still have a chance to win the league. We have to do our job and see what Lille do against Angers.

"Sometimes you need a little luck and think it was a penalty and unfortunately a red card for Reims. That's football, sometimes the luck goes your way, and tonight it went our way.

"I think we deserved the victory and the three points that put us in a position to fight with Lille until the very last game."

Neymar opened the scoring with a 13th-minute penalty before Mbappe doubled PSG's lead 11 minutes later, while Marquinhos and Moise Kean made sure of the points in the second half.

PSG's Neymar has scored 18 goals from penalties in Ligue 1 since his debut in 2017-18 (19 penalties taken) – at least five more than any other player over the period. He has been involved in five of PSG's last seven goals in the top flight (three goals and two assists).

Mbappe scored his 40th goal for PSG in all competitions this season (26 in Ligue 1), his best tally in a single campaign.

PSG have earned 79 points after 37 games in Ligue 1 this season, only Monaco (79 in 2013-14) and the Paris side (86 in 2016-17) have claimed at least that many points without standing at the top the table at this stage of the season.

Neymar and Kylian Mbappe were on target as Paris Saint-Germain kept alive their hopes of retaining the Ligue 1 title with a 4-0 victory over Reims on Sunday.

Mauricio Pochettino's side will go into next weekend's final round of the season against Brest one point behind leaders Lille, who were held to a 0-0 draw by Saint-Etienne.

PSG will only get their hands on the title if they better the result Lille get against Angers next weekend, needing Christophe Galtier's team to slip up.

Neymar opened the scoring early on with a penalty after Yunis Abdelhamid had been dismissed for handling an Mbappe shot. World Cup winner Mbappe, Marquinhos and Moise Kean wrapped up the most routine of victories.

Any hopes Reims had of securing back-to-back wins at the Parc des Princes were all but extinguished in the 13th minute.

Abdelhamid received his marching orders for handling Mbappe's goalbound effort, with Neymar nonchalantly slotting home his ninth league goal of the campaign from the resulting penalty.

Mbappe was not to be denied 11 minutes later, sliding home from close range after Thomas Foket had inexplicably rolled the ball across the face of his own goal.

France international Mbappe then fired wide after being played in by a sumptuous Neymar flick as PSG failed to add the third goal their dominance deserved before the interval.

Mbappe went close on a number of occasions at the start of the second period, while Neymar saw an effort ruled out for offside after Ander Herrera had struck the post from distance.

Neymar turned provider for PSG's third after 68 minutes, his corner from the left headed past Predrag Rajkovic by Marquinhos from six yards.

Substitute Kean fired into the bottom-right corner from 15 yards a minute from full-time as PSG inflicted a first defeat in six away games on Reims.

Mauricio Pochettino hopes his Paris Saint-Germain side are able to make Lille feel the heat on the final day of the Ligue 1 season.

PSG's title defence will be over on Sunday if surprise leaders Lille get a better result at home to Saint-Etienne than Pochettino's men are able to manage when Reims visit the Parc des Princes.

If Lille win, the best PSG can hope for heading into the final weekend is having a three-point deficit to overturn.

Following the midweek penalty shootout triumph over Montpellier in the semi-finals of the Coupe de France, Pochettino believes his players have got last weekend's disappointing 1-1 draw at Rennes, that handed Christophe Galtier's side an advantage they appear unlikely to relinquish, out of their system.

"We don't want to repeat the problems that we made last week with Rennes. I think that is key," he told a pre-match news conference.

"We need to stay in control of the game to go after a victory and get three points that would keep us in the title race until the last day of the season

"We are motivated, nobody needs motivation. We are motivated to win tomorrow and put the pressure on Lille. We are not thinking about following their game

"We are focused on our match and getting three points because that would give us a chance. Our fate is not in our hands, but we need to make sure that we get our job done."

As is now customary at Pochettino briefings, Kylian Mbappe's future was raised.

The former Tottenham boss offered no updates on any potential new contract, choosing instead to make light of the France superstar's boisterous midweek goal celebrations.

"Thanks to that celebration I have some back pain, which I am having physio treatment for," he chuckled.

"Paris Saint-Germain have an ambitious project in place and keeping a player like Kylian is a key priority for all of us."

PSG will be without Neymar in the cup final after he collected a booking during an at times fraught encounter with Montpellier, subject to an appeal

"This is something the club is handling over the next few days," Pochettino confirmed. "We will see what the decision is and what we can do. But it is something we are thinking about."

Even without Neymar or Mbappe in the short or long term, PSG do not lack for attacking options, although Argentine striker Mauro Icardi has been off colour of late.

The former Inter captain is without a goal in his past four appearances, with a particularly lacklustre showing during the Champions League exit to Manchester City seeing him restricted to 16 touches at the Etihad Stadium.

Nevertheless, Pochettino believes his countryman can still contribute within his preferred high-octane style of play.

"At Tottenham we had different options in terms of style of play, transitions and playing high at different stages," he explained.

"They depend on how well the team was doing, this depends on how you build a team over time, getting to know your players very well and their attributes.

"Mauro Icardi can adapt to any style. He is a top player and that doesn't just apply to transitions, he is dangerous in the box and a clinical finisher.

"These are things we can all work on together and we need to build it over time with the team, bearing in mind the players' attributes so you can create the right dynamics in the team to give you the flexibility that the game requires."