sport alloys on non-sport

No they wont fit for the reason you say, 197/200 wheels have 5 studs.

You would need to put 197/200 hubs on your car which would be a lot of work as they're completely different to the standard car
 
Depends on the offset of the standard wheels, as the sport ones are unusually high, so spacers would help to bring them closer to "normal", depending on what normal is for a standard Clio.
 
Get some aftermarket branded ones that are similar with four stud.
 
Get some aftermarket branded ones that are similar with four stud.

Yes, for the sakes of it there is plenty out there. Could even be cheaper after youve messed around with getting some 197 wheels and spacers/hub change to allow them to fit as well.....

Hope that helps.