14th cousin isn't really close at all.
If you wanted trusted access to a shared ancestor a couple centuries ago, that'd be one thing, or if it was just a matter of adding one or two relatives to connect a branch, but with only nine contributions I suspect this person has pretty much only made their own profile here and not actually built their tree.
If I were you, I'd leave him and his recent tree alone, and let him or his immediate family connect in their own time.