Refit Standard HeadUnit back, need aerial adaptor

Advice please, i need to re-fit the stand head unit back into a MK3 Clio RS200 ( for sale ) and i need the adaptor that fits to the back that connects the aerial to it...... On ebay there are adaptors to fit aftermarket stereos, but nothing to re-fit the original.... Could anyone point me in the right direction.. Cheers
 
Don't know if you've got this sorted but there is no adaptor for the standard unit? You just pull the adaptor off that's used for aftermarket head units, then that attaches to the original head unit?