[8] In August 2020, he signed a professional contract with Premier League club Sheffield United.
[9][10] On 11 March 2022, Cappello joined National League North side Blyth Spartans on loan for the remainder of the 2021–22 season.
[11] On 22 July 2022, Cappello signed for National League side FC Halifax Town following his release from Sheffield United.
[14] In November 2018, Cappello received maiden call-up to senior team of Belize for 2019–20 CONCACAF Nations League qualifying match against Puerto Rico.
[16] FC Halifax Town This biographical article related to Belizean association football is a stub.