Inclusion here does not imply I think the track may be in a releasable form - many would not have got past the rough demo form and release would not be appropriate. Some of these songs may not exist at all, some may have been lost and some may have been deliberately wiped. The band have always done a good job of deciding what to release and I see no reason to stop trusting them now.
Note that the lyrics to the song in the LP/CD/MC booklet are for this early withdrawn version and have the extra lines in the chorus which are no longer in the song.
Brian has reported the existence of a tape, dating from 1976, of Queen and Rod Stewart singing a version of the song. This is likely to be just jamming, rather than a serious song in releasable quality.