Yep, I've got this one.
I think it's a privet (really not sure of that).
I collected it last year and I still don't know (if it's not dead as for the moment it didn't bud much, but this spring is a mess) what I'll do with it.
The normal way would certainly be: chop and let grow to try to get a nice short/strong taper tree but I just love the fact that it has actually a close to perfect trunk line...
Also, something one can't see on the picture, it has 3 nice thick roots perfectly disposed at the base (like a hippy sign), way to long roots for a short tree, perfect sized roots for this height of tree.
So may be I'll just try to get some nice foliage pads.
Or may be just re-plant it somewhere in my yard.
Anyway I love it.