Acer Tree in large pot (Grove OX12)

We've had this tree from little and it now stands just under four feet tall (excluding container). It's just beginning to sleep for the autumn/winter now as you can see and needs to be planted into the ground to let its roots spread for the new year. It's very heavy and so I ask that you have the means to lift it and transport it. The photos show how it is now and how it looks when in leaf.