There are two unknown football/soccer games that were never released for the C64. It's unknown why they never got a release.
The first one was by Codemasters. It seems to be a top-down game. The only things that can be found are pitch graphics for the game. It's been speculated that it was going to be pitched by Codemasters, but never got past an early development stage.
The second one is developed by Cult in 1990. It seems that it was going to be more advanced than the other one thanks to its first person-looking perspective. It has the Cult logo on the boarders.
Special thanks to GTW64 for info: https://www.gamesthatwerent.com/gtw64/gtwindex/u/. Scroll down a bit to find them.