Agent Jorge Mendes claims his client Cristiano Ronaldo "has never deserved the Ballon d'Or more" following his individual achievements at club and international level.
The Portugal star returned to Manchester United from Juventus after a successful year in terms of individual records, including becoming the all-time international top scorer while also finishing as the leading marksman in Serie A in 2020-21.
The veteran forward has continued to be prolific for United this term, scoring five goals in just six appearances in all competitions for the Red Devils.
Ronaldo was less successful on the team front as Juventus saw their grip on the Italian top-flight broken, finishing fourth, while also being knocked out of the Champions League in the round of 16, and Portugal lost to Belgium at the same stage of the Euro 2020 finals.
However, Mendes feels the 36-year-old's remarkable personal achievements should make him the frontrunner for the coveted accolade.
"The numbers and statistics attached to Cristiano Ronaldo's name speak for themselves and should be enough for him to win another Ballon d'Or," Mendes told France Football.
"The absolutely remarkable total of 115 goals for the Portuguese national team makes him the record holder in the history of men's international football. This year he broke that 15-year-old record, to which he can add that of the top scorer in the history of professional football.
"All these achievements, which represent the greatest performance in football history, should be pivotal in awarding the trophy, as he continues to demonstrate that he is, without doubt, the best world football player of all time.
"It is true that this is an individual trophy, but let's not forget that Cristiano Ronaldo was the top scorer in the demanding Serie A and was also the top scorer in the last European Championship [making him the all-time top scorer in that competition].
"He holds the record for goals in the Champions League and is the only player in the world to have won everything in three different countries with maximum competitiveness, as was the case in England, Italy and Spain.
"All this at the age of 36, with an absolutely unique regularity, commitment and a phenomenal capacity to overcome difficulties. In my opinion, this year the Ballon d'Or has a name: Cristiano Ronaldo. For me, he has never deserved it more."
Ronaldo faces stern competition if he is to win a sixth Ballon d'Or, however, with Bayern Munich striker Robert Lewandowski netting the most goals in all club competitions among players in Europe's top five leagues last season (48, 12 more than Ronaldo) and he has already managed 13 this term.
Kylian Mbappe, Erling Haaland and Lionel Messi also outscored the Portugal star in all club competitions last season, and Messi claimed an international trophy with Argentina as he won the Copa America, finishing the tournament as the top scorer and top assist provider.
Meanwhile, midfielder Jorginho is being tipped as a contender after winning the Champions League with Chelsea and Euro 2020 with Italy.