Arsenal was almost going to sign Ronaldo at the early stage of his career, however, Manchester United signed him.
Sergio Ramos had a chance of signing a contract with Manchester United, but he signed with Real Madrid in 2015.
In 2014, Tonis Kroos almost signed a contract with Manchester United.
Thomas Muller was ready to join Manchester United in 2015.
In 2003, Manchester United was ready to make a transfer with Ronaldinho, but he signed with Barcelona FC at the last minute.