Satan getting confused -- he brings presents! (5)
I believe the answer is:
santa
'he brings presents' is the definition.
(Santa Claus delivers presents)
'satan getting confused' is the wordplay.
'getting confused' indicates anagramming the letters.
'satan' with letters rearranged gives 'SANTA'.
(Other definitions for santa that I've seen before include "Dec's visitor?" , "The present chap" , "Midwinter gift bringer" , "Children's name for Mr Claus" , "Man with sack" .)