Date of birth
The Liverpool-born left-back is heading into his sixth season as a Clarets, after signing a two-year scholarship ahead of the 2019/20 season.
Armstrong played for both Everton and Liverpool before joining Burnley and also is an U13 Liverpool Schoolboys National Champion.
The left-back joined Padiham at the end of September on a months experience loan.
After a spell at Padiham, Armstrong then joined Clitheroe on loan for a month at the beginning of December.