At home, renowned boxing legend initially gets angry (8)
I believe the answer is:
inflamed
'angry' is the definition.
(I've seen this before)
'at home renowned boxing legend initially' is the wordplay.
'at home' becomes 'in' (similar in meaning).
'renowned' becomes 'famed' (synonyms).
'boxing' is an insertion indicator ('box' can mean contain, as in to put in a box).
'initially' suggests taking the first letters.
The first letter of 'legend' is 'l'.
'famed' placed around 'l' is 'flamed'.
'in'+'flamed'='INFLAMED'
'gets' is the link.
(Other definitions for inflamed that I've seen before include "Red and sore" , "Aggravated; red" , "Swollen, hot, red" , "Angry" , "Provoked (someone) to strong feelings" .)