Herrera has started to establish himself as a key member of the United midfield, but he has told El Pais that it is another midfield hero who is a leader in the squad.
Carrick is not the player who wins all the headlines for the Red Devils, but he has remained a central figure for years, and is now considered an unsung hero at Old Trafford.
After enduring a few poor seasons, the English veteran is enjoying something of a return to form this term, and he has earned himself a new one-year contract, as per the BBC.
The 33-year-old has made over 350 appearances for the Red Devils since signing for the club in 2006, and was named as United’s vice-captain in December following the departure of Darren Fletcher to West Bromwich Albion.
Carrick is an established Premier League star, with a wealth of experience behind him, but due to his quiet nature he is often overlooked.
There are complaints about his inclusion in the England squad, due to his advanced age and lack of footballing future, but United look much assured when he is playing, and Herrera believes that his silence is not a stain on his leadership abilities.
The Spaniard, who has come to establish himself alongside Carrick in the United midfield, told El Pais: “I think there is great respect for those who like Rooney and Carrick spent many years here, because you see that it is very difficult to do.
“Carrick is very serious, but he represents another good phrase from [Marcelo] Bielsa: ‘Leaders need not talk much, but they are listened too when they talk’.”