Caught wearing muddy loafers outside (8)
I believe the answer is:
alfresco
'outside' is the definition.
(I've seen this before)
'caught wearing muddy loafers' is the wordplay.
'caught' becomes 'c' (cricket abbreviation).
'wearing' means one lot of letters goes inside another.
'muddy' indicates an anagram (I've seen this in other clues).
'loafers' is an anagram of 'alfreso'.
'c' inserted inside 'alfreso' is 'ALFRESCO'.
(Other definitions for alfresco that I've seen before include "Outside" , "Out of doors" , "Outdoors, meal perhaps" , "exposed to the fresh air" , "where it's cool" .)