Eustace was born in Stocksbridge, West Riding of Yorkshire, and began his career as a trainee with Sheffield Wednesday.
He made his debut in the 1962–63 season, and played more than 200 games in all competitions,[1] before being sold to West Ham United for a club record £90,000 fee.
[3] He played in midfield, earlier in his career at wing half, later at inside forward, who both made and scored goals.
Clark moved to Nottingham Forest in 1993, and Eustace was sacked a year later when the club failed to reach the play-offs.
[5] Eustace returned to Sheffield Wednesday as a scout during Chris Turner's brief managerial tenure, but was made redundant as part of an overhaul of the coaching staff in 2006.