Clumsy person playing with fire gets burnt (13)
I believe the answer is:
butterfingers
'clumsy person' is the definition.
(butterfingers is a kind of clumsy person)
'playing with fire gets burnt' is the wordplay.
'playing' indicates anagramming the letters.
'with' is a charade indicator (letters next to each other).
'fire'+'gets'='firegets'
'firegets' next to 'burnt' is 'firegetsburnt'.
'firegetsburnt' with letters rearranged gives 'BUTTERFINGERS'.
(Other definitions for butterfingers that I've seen before include "He can't catch for toffee!" , "one who spills a lot" , "Inept catcher" , "One who fails to hold a catch" , "Someone always dropping catches" .)