Additional clothing for fielder (5,5)
I believe the answer is:
extra cover
'fielder' is the definition.
(I've seen this before)
'additional clothing' is the wordplay.
'additional' becomes 'extra' (I've seen this before).
'clothing' becomes 'cover'.
'extra'+'cover'='EXTRA COVER'
'for' is the link.
(Other definitions for extra cover that I've seen before include "Cricket fielder - more insurance?" , "Greater insurance" , "Cricketer" .)