Varied the City football team, after first half's reversal (8)
I believe the answer is:
eclectic
'varied' is the definition.
(I've seen this before)
'the city football team after first half's reversal' is the wordplay.
I cannot really see how this works, but
'the' could be 't' (the is pronounced as a 't' sound in some dialects) and 't' is located in the answer.
'city' could be 'eci' (EC1 is the City of London postcode) and 'eci' is found in the leftover letters.
This explanation may well be incorrect...
(Other definitions for eclectic that I've seen before include "Drawn from various sources" , "Accepting beliefs or ideas from various sources" , "ranging wide" , "Chosen from various sources" , "Derived from a diverse range of sources" .)