Tramp's son turned into a cricketer, perhaps (9)
I believe the answer is:
sportsman
'a cricketer perhaps' is the definition.
(I know that cricketer is a type of sportsman)
'tramp's son turned' is the wordplay.
'turned' indicates an anagram.
'tramps'+'son'='trampsson'
'trampsson' anagrammed gives 'SPORTSMAN'.
'into' acts as a link.
(Other definitions for sportsman that I've seen before include "player" , "He engages in physical games" , "Male athlete" , "Chap aiming for game" , "Game fellow" .)