It's not loud new ties that may interest the skier (5)
I believe the answer is:
piste
'interest the skier' is the definition.
The definition suggests a singular noun which matches the answer.
'it's not loud new ties that' is the wordplay.
I cannot really see how this works, but
an anagram of 'ties' is 'iste' which is present in the answer.
A single letter 'p' remains which might be clued in a way I don't see.
This explanation may well be incorrect...
'may' is the link.
Can you help me to learn more?
(Other definitions for piste that I've seen before include "Ski slope" , "slippery slope" , "Ski-slope" , "Ski track" , "Skiing course" .)