Weld a socket to it.
If its got that shitty loose collar on it, its a f**king pain in the ass to remove. Although if its a genuine Renault one, they only made about 8 different types, so if you have a few mates with Clio's, chances are one of them will fit it.
Our old mechaninc in work had a box of 8 or so and guaranteed one of them would fit it.