The rest of his career, which lasted from 1963 to 1975, was mainly spent in the minor leagues, as well as with an independent professional hockey team, the London Lions, during the 1973–74 season.

[1] The NHL expanded in 1967, doubling in size, and Clancy was claimed by the newly-formed California/Oakland Seals (the team changed names midway through the season) in the expansion draft.

[1] Back with Tulsa for the 1968–69 season, Clancy played two games in the NHL with the Toronto Maple Leafs in December 1968.

On October 17, 1973 Clancy was traded once more, going to the Detroit Red Wings, though he spent the 1973–74 season split with the Albuquerque Six-Guns of the CHL and the London Lions, a British-based team that played across Europe that year.

He scored 1 goal and had 1 assist in 7 games played, but missed a medal as Canada finished in a 3-way tie and controversially ended up in 4th place.