While you were not our top candidate in this role, I was impressed by your skills and I was trying to open up a second position for you. I was ultimately not successful in doing that at his time.
We have been interviewing a few candidates for a development role, and we have a candidate that we believe will bring a lot of value if hired though they are not the best fit for the role we interviewed. I have been personally trying to see if we could open up a position but unfortunately could not convince my manager to approve the role.
Is a message like above appropriate? I would really like this candidate to re-apply with us in the future.