On 24 June 1969, Leeds United manager Don Revie paid £165,000 to Leicester City for Clarke's services, again breaking the record British transfer fee paid by his previous club. Clarke scored 26 goals in his first season at Leeds and earned the nickname "Sniffer", because of his predatory instincts in front of goal – if there was even the remotest goal scoring opportunity, Clarke would "sniff" it out. Leeds United chased a dream "treble" of League championship, FA Cup and European Cup though ultimately they won nothing. Clarke hit the post in the FA Cup Final at Wembley (with strike partner Mick Jones following up to score the rebound) and then went on a run through several Chelsea defenders in the replay to set up a goal for Jones again, but Leeds United still lost. The title had already gone to Everton who had clinched the title several weeks before the end of the season, and the European Cup campaign ended with defeat to Celtic in the semi-final.(0–1 at Elland Road and 1–2 at Hampden Park)