A bit wordy but how about this for a start. Dont have access to a computer at the moment so someone might be able to adapt and pretty it up.
Y-Chromosome DNA Match, but no shared direct ancestor
Person-1's ydna results to Person-2 suggests there is a direct paternal relationship, but the exact connection is currently unknown. The results of the yDNA test of Person-1 and the yDNA test of Person- 2 are a close match. 66/67markers.
The most recent common confirmed ancestor in the yDNA line of Person-1 is Person-3 and the yDNA line of Person-2 is Person-4 (optional depending if further data is known, could like to existing profiles with the other template already there)
The most likely distant ancestor in the yDNA line of Person-1 is Person-5 and the most likely distant ancestor in the yDNA line of Person-2 is Person-6. (Suggested by a common geographical place or predicted steps and taking account of confirmed ydna). The reasons for this are: (common geographical place etc, be brief. Maybe we could have a list of a few)
You may wish to consider alternative genealogies for this profile.
Are you able to contribute to a DNA test to help solve this mystery? (Add link to DNA test source page) or contact Person-7 (profile manager or alternate interested wikitree profile).