Where I live behind my house there are two field maples growing in an alleyway. They are both at least 2 - 3 feet high and they growing out the bottom of a wall between the wall and the paved ground. I wouldn't be able to dig the roots out due to this and I know that once the council arrives to clean the alleyway they will be removed. Is there any way I could cut the trunks and bring them home? If I air layer them it would probably just attract the attention of children who will most likely just damage the trees.