Last match finished, son hangs about ... (6)
I believe the answer is:
hovers
'hangs about' is the definition.
(I've seen this in another clue)
'last match finished son' is the wordplay.
'last' indicates one should take the final letters.
'finished' becomes 'over' (similar in meaning).
'son' becomes 's' (genealogical abbreviation for son).
The final letter of 'match' is 'h'.
'h'+'over'+'s'='HOVERS'
(Other definitions for hovers that I've seen before include "Hangs in the air (unable to decide?)" , "Floats above" , "Hangs in the air without moving" .)