Striker Clarke created two new British transfer records thanks to his moves to and from City in the 1960s. He arrived at the club from Fulham in 1968 for a fee of £150,000 before moving on to Leeds United only a year later - the Foxes making a profit on their marksman with a selling fee of £165,000.
He started his career with Walsall before making a name for himself at Craven Cottage with Fulham. Clarke's goals caught the attention of Leicester, something which saw them shell out a large sum for his services and highlight the growing ambitions of the club in those days. Clarke's early form matched those ambitions, too, with some fine performances and important goals early on - a hat-trick against Manchester City being the highlight.
That form soon dropped, as did Leicester's, as they endured a relegation battle in the 1968-69 season. Clarke was seen as a man for the big occasion, scoring the winner in the FA Cup semi-final clash with West Brom, but his style of play was often seen as lazy by some supporters - especially in the thick of a relegation scrap.
Leeds United and their manager Don Revie soon snapped Clarke up and he didn't disappoint at Elland Road - earning the nickname 'sniffer' for his ability at scoring goals inside the penalty box. He won FA Cup, league championships and Fairs Cup medals with Leeds and spent nine years in West Yorkshire. He finished his career in Yorkshire, too, as player-manager at Barnsley.