Keeper one right round wicket (5)
I believe the answer is:
owner
'keeper' is the definition.
(I've seen this before)
'one right round wicket' is the wordplay.
'right' becomes 'r' (common abbreviation).
'round' indicates putting letters inside.
'wicket' becomes 'w'.
'one'+'r'='oner'
'oner' enclosing 'w' is 'OWNER'.
(Other definitions for owner that I've seen before include "The person in lawful possession" , "Title-holder" , "Possessor, proprietor" , "Person having property" , "Holder, possessor" .)