Rhubarb on neglected plot

I am a newbie and having looked at my newly acquired allotment yesterday I discovered two large clumps of rhubarb. They are obviously long established clumps will they transplant to another area? If so can this be done now or do I need to wait until autumn? Unfortunately there doesn't appear to be anything else to salvage. 

Rhubarb likes being moved after the leaves have died down. It will give it a new lease of life. Select nice strong pieces of root with growing points. It does not seem to mind being in the shade or sun.