This is aiming to be 15 feet wide and 20feet tall, so it sounds as though it's just starting to do its thing. If its in the wrong place, now's the time to move it!

If you want large leaves then it will need pruning back quite hard every spring. Or you could take out a third of the stems each year to keep in under control. The only drawback is that you won't get the frothy flowers if you prune every shoot, so maybe the 3rd off every year would be better if you want flowers. Don't prune at all for the first year to let it grow a good root system.

thanks steragram and volunteer for the advice, it's a beautiful shrub, don't think it will be too large for the spot it's in.