Man Utd officially confirmed Cunha's squad number that he will wear the no.10 shirt as a Manchester United player.
The Brazilian completed his transfer from Wolverhampton Wanderers in June and was among the group reporting to Carrington for the start of pre-season training on Monday.
Cunha has been enjoying a well-deserved summer break, having helped Wolves to avoid relegation during the second half of the 2024/25 season.
He also represented Brazil during last month's World Cup qualifiers, as the Selecao confirmed their place at the 2026 World Cup in the USA, Canada and Mexico.
Cunha was the no.10 at Wolves last season, when he scored 15 goals in 33 games after succeeding Daniel Podence.
He previously wore 12 for the Black Country club and donned no.9 and no.19 while at Atletico Madrid.
Matheus was no.10 for Hertha Berlin during the 2020/21 season but had a variety of different shirt numbers at his other clubs Sion and RB Leipzig.
The number is a famous one in his native Brazil, having been synonymous with several of the country's biggest stars.
vunlnprtuz
78
Barcelona fans: "Yamal on the right, Nico Williams on the left" Atletico Bilbao:😂
HUnited
25
Manchester United and their foolish coach Ruben Amorim—hahaha! So disrespectful to Marcus Rashford, giving his number 10 jersey away while he’s still on the team.
Everblessed10
12
This club is a real joke man
DrHalaMsdrid
10
Still man united have not sorted out RASHFORD …. It will be crazy if he keeps getting 350k a week …. Without even making the match day squad… which I trust he will do with ease