Over the two legs of PSG's quarter final victory over Champions League holders Bayern, both Neymar and Mbappe were at their very best.
The Brazilian's form in the second leg on Tuesday was worthy of a highlights reel of its own, whilst Mbappe could have added to his two goals from the first leg, if it wasn't for a controversial offside flag.
Despite the fact that both men are considered two of the best footballers in the world, and could win the Champions League this season, Carragher thinks both are playing in a 'poor league.'
"His [Neymar] legacy does hinge on the Champions League," the former Liverpool defender said on CBS Sports.
"It does because that's why he's gone there, to do something the club has never done before and also to win the Ballon d'Or, they were the two reasons he went there.
"He also went there to get out of Messi's shadow at Barcelona, the best players in the world go for the Ballon d'Or year in, year out and he felt he couldn't win it there.
"If PSG win the Champions League this year, it will be a toss up between him and Kylian Mbappe who wins it. So those are the reasons he went.
"I don't like to see him there, I don't think players of the quality of Mbappe and Neymar should be playing for PSG. They shouldn't be playing in the French league, it is a poor league, an average league.
"Players of that quality should not be playing week in, week out in the French league, it's not good enough."
Neymar has been linked with a move back to Spain pretty much constantly since moving from La Liga in 2017 but it looks like he is set to stay in the French capital.
Talking after Mauricio Pochettino's side secured their place in the semi finals, the 29-year-old was discussing his future, saying, "I don't think this is even a topic any more; I obviously feel very comfortable, at home at PSG. I feel happier than before."
Whilst Neymar looks likely to sign a new contract, before his current deal expires, the same can't be said of Mbappe.
The 22-year-old's deal also only has 15 months to run but he has reportedly told the club he wants to join Real Madrid, and now it could be a case of whether they're willing to see him walk away for nothing next year.
Featured Image Credit: PA/CBS
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