You are missing two sections of propshaft and a viscous coupling. If you look on hippos thread in the how to replace vcu bearings you will see what is missing....
BUT until you know why it has been removed you don't know how much it will cost to repair.
For instance my freelander was missing the prop when I got it... So far I have sourced another prop and vcu, replaced the transfer box (ird) I have also replaced the gearbox due to damage caused by a damaged ird. I don't think my rear diff is damaged but time will tell.
When I get some new prop bearings I will be back to 4wd.
If you only want to drive on the road then the most cost effective option is to leave it as it is, second hand parts will probably cost as much as you paid for the freelander. Reconditioned - considerably more...
Many people take the prop off. I have friends with a freelander that had knackered prop bearings. They removed the propshaft purely because of them and to prevent any further damage as they only drive on road.