Player, one wearing odd boots (6)
I believe the answer is:
oboist
'player' is the definition.
(oboist is a kind of player)
'one wearing odd boots' is the wordplay.
'one' becomes 'i' (Roman numeral).
'wearing' is an insertion indicator.
'odd' indicates an anagram.
'boots' anagrammed gives 'obost'.
'i' going within 'obost' is 'OBOIST'.
(Other definitions for oboist that I've seen before include "Wind player" , "Instrumentalist" , "Do I boost the musician?" , "Musician who plays woodwind of treble pitch" , "orchestra member" .)