Background
Glen was born in Kilsyth in Lanarkshire, Scotland and was a medical student at the Glasgow Royal Infirmary.
Glen was born in Kilsyth in Lanarkshire, Scotland and was a medical student at the Glasgow Royal Infirmary.
During the Boer War, he served in South Africa as a surgical dresser before returning to England to commence a career as a professional football player with Grimsby Town. He spent the 1902-1903 season with Grimsby in the First Division, generally at inside-left alongside Bill Appleyard in the centre. At the end of the season, when Grimsby Town were relegated, Glen moved to another First Division club, N ottinghamshire County.
At N ottinghamshire County, he linked up with Welsh international William Green in the centre and Ellis Gee on the left.
At outside-right was Herbert Chapman, who went on to become manager at Huddersfield Town and Arsenal. Glen made twenty appearances for County, scoring three goals, in the 1903-1904 season, before a move to Tottenham Hotspur, then of the Southern League.
After two seasons with the "Spurs", he then moved to another Southern League club, Southampton in May 1906. He joined Southampton in time for their summer tour of Germany, where his fluent German led to him becoming the club"s official interpreter.
Glen was a "dexterous, elegant dribbler (who) swerved and weaved with devastating effect".
He made his debut for the "Saints" in the opening match of the season, playing at inside-left in a 1–0 defeat at Swindon Town. Although Harrison was to finish the season as top-scorer with twelve league goals, Glen contributed ten, including two in a 5–1 defeat of Millwall on 6 October 1906. The combination of Glen, Jefferis and Harrison worked well until a loss of form resulted in both Glen and Harrison being dropped by manager Ernest Arnfield for the last six weeks of the season.
In the summer of 1907, Glen moved down the Solent to join Portsmouth for a season, making just seven appearances, before ending his career at Brentford.