*Club domestic league appearances and goals, correct as of 16:53, 30 December 2024 (UTC) ‡ National team caps and goals, correct as of 17:55, 15 October 2024 (UTC)
Miller began his career in the youth system at Motherwell from the age of seven.[2] He made his senior debut as a second-half substitute in a 4–0 home victory over Inverness CT in the Scottish League Cup six days after his 16th birthday on 31 August 2022, becoming the youngest player in a major competition across the club's 136-year history.[3][4] He was an unused substitute for the first team for several fixtures during the 2022–23 season, with his first appearance in the Scottish Premiership coming in a 3–0 loss to Rangers on 28 December 2022.[2]
With Paul McGinn and Stephen O'Donnell unavailable due to injury, 18-year-old Miller was named as team captain for Motherwell in the semi-final of the 2024–25 Scottish League Cup at Hampden Park (his first senior appearance at the national stadium);[11] they took the lead against Rangers, but ultimately lost 2–1.[12] He suffered a hairline fracture to his ankle in another match against Rangers on 29 December 2024.[13][14]
International career
Miller made his debut for the Scotland under-16s aged 14 in August 2021 against England, in which he scored directly from the kick-off as play resumed at the start of the second half[15] – the strike was recorded on video, and was later awarded as the Goal of the Year in Scottish international football across all levels.[16]
Lennon is the son of former Scotland international footballer Lee Miller; his mother Donna died when he was five years old.[2][20] He has one older brother and two younger brothers. He attended Coltness High School in Wishaw, where his PE teacher rated Miller more highly than other future elite players he had seen as adolescents, including David Turnbull[15] who also emerged as a midfielder with Motherwell.[2]
