Cristiano Ronaldo and Lionel Messi's struggles this season have been played down by former Chelsea and France defender Frank Leboeuf.
Both Ronaldo and Messi switched clubs last summer, joining Manchester United and Paris Saint-Germain respectively.
Ronaldo got off to a fast start on his return to Old Trafford, but has scored just once in his last 10 games for United.
Meanwhile, in his first-ever season away from Barcelona, Messi has scored just two league goals all term, but co-leads Ligue 1 for assists and has been in better form in Europe.
The Argentine has been outshone somewhat by team-mate Kylian Mbappe, who has a total of 24 goal contributions in as many games in the league.
And fellow countryman Leboeuf admits that the younger man's "genius" is showing now he's been at PSG for a few years, whereas Messi and Ronaldo are still finding their feet at their new club.
"Messi seems to have been somewhat underwhelming. Are PSG fans back in France a bit let-down by Messi because they would have expected so much from him?" LeBoeuf asked while speaking to BritishGambler.co.uk.
"Yep, because they have seen Messi for so many years at Barcelona being absolutely fantastic. But he was at home.
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"We live in a world of immediate gratification where people want results immediately. Even Messi needs time to settle in and he’s doing that now. He’s not young anymore, so we don’t know if PSG are getting 60% or 80% of the Messi we saw at Barcelona – exactly the same with Cristiano Ronaldo at Manchester United now.
"Messi has had some good games where he has done pretty well. Of course, we are waiting for him to deliver in the Champions League.
"We can also talk about Sergio Ramos, Neymar – there’s only one player offensively who has consistently delivered, and that’s Mbappé. Imagine PSG fans booed him at the beginning of the season! He has stayed, he has stepped up and is the only one scoring goals like crazy.
"We might have to wait for Messi, for Neymar, for Ronaldo to deliver – we don’t have to wait for Mbappé to deliver. Mbappé is just a genius."
