Small Ash tree (Hest Bank LA2)

Ash tree that was growing in a border that it will get to big for it is about 4ft tall and in a healthy condition. We have dug it up today and it will need replanting as soon as possible. It is standing in bucket of water at present to stop the roots from drying out. Ideal if you have the room and are looking for a tree that does not get too big or wide