BiographyDay played youth football for Crystal Palace, where he signed a two-year scholarship in 2014. He left after one year of his scholarship and joined Barnet as a second-year scholar for the 2015–16 season. He made his Football League debut when he came on as a substitute against Crawley Town on the final day of the 2015-16 season.
Day joined Staines Town on loan for a month in September 2016 - this loan was later extended beyond January 2017. Day joined Hemel on loan in September 2017 and this deal has subsequently been extended until the end of the season.