Soccer team constantly not turning up (7)
I believe the answer is:
everton
'soccer team' is the definition.
(I've seen this before)
'constantly not turning up' is the wordplay.
'constantly' becomes 'ever' (I've seen this in other clues).
'turning up' says the letters should be written in reverse.
'not' back-to-front is 'ton'.
'ever'+'ton'='EVERTON'
(Other definitions for everton that I've seen before include "Merseyside football team" , "One side in blue" , "Premiership football team" , "Merseyside football club" , "Merseyside soccer team" .)