The Russian born Andrei Arshavin wears number 21 jersey for Arsenal.
Phillip Lahm, captain of Bayern Munich also wears 21.
David Silva, ace of Manchester City also wears 21.
Brazilian Correia Adriano is number 21 of Barcelona
Ryan Giggs (Manchester United), Neymar (Santos), Thiago Alcantara (FC Barcelona), Gareth Bale (Tottenham Hotspur), Hernan Crespo (AC Milan), Didier Drogba (Chelsea)
Mia Hamm
Fernando Torres
Meow and meower
auguero does
Dwight Yorke for Manchester United
The number 84 is not a particularly common shirt number. No player who is particularly famous has ever worn it.
Patrick Viera, Cesc Fabregas, Vidic.
Johnny Torres from Wake Forest University.
It is Gary Nevile and and Cafu of Brazil.
Tim Howard for Everton Tiote for Newcastle
Cristiano Ronaldo
Well there is Owen Hargreaves, Cesc Fabregas, and Sergio Ramos!