L322 2010 TDV8 Overfinch Towbar

Gents,
Just picked up a 2010 TDV8 Overfinch and was wondering could I fit a standard towbar to the rear or has it got to be a special (expensive) one to get past the bottom skirt ?

Its not the tow bar that's the problem, its the electrics that will need to the proper harness to plug in and not show errors and will probably need the management system tell it is there, the tow bar will need to be a removable one, tow bars are now part of the mot and have to work properly.