Neymar has warned Manchester United they face a Champions League backlash after Paris-Saint Germain's draw with Bordeaux left boss Thomas Tuchel furious.
Ole Gunnar Solskjaer's side host PSG on Wednesday needing just a point to secure qualification for the knockout stages of Europe's top club competition.
The French champions go into the game having been held to a 2-2 draw by Bordeaux on Saturday, having also lost their previous Ligue 1 game 3-2 to Monaco.
While PSG are still top of their domestic league, their chances of progressing from Group H in the Champions League are on a knife edge after two defeats already in the competition so far.
As well as losing to United in their opening game, PSG were also beaten by RB Leipzig - although they gained revenge by beating the Bundesliga side in Paris last week.
And Neymar has warned United that his side plan to make amends for their dropped points in the league with a win at Old Trafford this week.
"We know the importance of the Champions’ League game on Wednesday," Neymar told Canal Plus , cited by Get Football News France.
"Like the Champions’ League game we played on Tuesday - we didn’t play well, but we managed to win.
"But on Wednesday we are going to try to do our best game, play well, but we need to improve certain details, play more as a team, be more organised, otherwise it is going to be difficult."
Neymar admitted PSG were "timid" on Saturday. The Brazilian equalised from the spot after Bordeaux had taken the lead early on, but PSG later relinquished a lead given to them by on-loan Everton striker Moise Kean.
“We did a timid match," said the Brazilian forward.
"We managed to score goals, but we lacked certain details.
"We must improve on that, because if not, if it is in the league, it is a league where normally we manage to win a lot of games, if we can’t do that, it is going to be tough in the league as well as in the Champions’ League.”
PSG were undone in the second half against both Bordeaux and Monaco, having led at half-time in both matches.
And head coach Tuchel was incensed at what he saw as a lack of effort on Saturday.
“We cannot play without any physical effort like we played in the second half," he told Canal Plus.
"This is not possible. The first half was okay - we had a lot of chances, we followed the plan, we played quite simple, we played in quite a disciplined way. It was an okay half, maybe even a good half.
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"We created a lot, but we lacked the seriousness to kill this match off, really kill it off, be decisive. We lacked the finesse and determination in the box in the first half.
"In the second half we lacked everything: discipline, effort, attitude, everything. We did not have the discipline to follow the plan. We lost the second half, which was absolutely deserved. Absolutely deserved."
Tuchel added: "For me it was not necessary for us to drop points for the second time like that, like losing points at Monaco in the second half, and again here, not necessary at all.
PSG's second-half drop-off could be encouraging for United, who showed a never-say-die spirit to grab an injury-time winner against Southampton in the Premier League on Saturday.