Just been through something similar on our 1.6 Dynamic. When I had front wheels off for tyre change I, and the tyre guys, had a good look round. There was slight play in the NS drop link but the rear joint rubber of the bottom arm had given up so it needed to be replaced. Fiats wanted £200+ for the arm (it comes complete and you can't do the joint separately). Managed to source it for ~ £60. Drop link done at same time and now its so, so quiet. You'll need tracking checked too. So you will be looking at £80-100 for parts, plus tracking, plus labour, plus Gordon's tax.