The pattern on the 928 glass is not the same as the A610 glass so you will have to replace both anyway not just one side.
However for the 928 you can buy just the glass new so if your backs are in good undamaged condition you can just buy the glasses and save money that way. Aim to pay approx £100 -£120 for each glass.
When you fit new lights your indicators will then look shocking so best change those as well. Unfortunately the little infill pieces are no longer available so you will have to clean those carefully.
If you still want new genuine Renault A610 lights we can do:
Foglamp LH for £350 instead of £500 (Renault Price)
Foglamp RH for £200 instead of £327 (Renault Price).
Indicators RH or LH for £275 each instead of £500 each or £500 pair (Renault Prices).
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