Granada finally supply Bieber with a TV contract (10)
I believe the answer is:
abbreviate
'contract' is the definition.
(synonyms)
'granada finally supply bieber with a tv' is the wordplay.
'finally' indicates one should take the final letters.
'supply' indicates anagramming the letters (in a supple way).
'with' is a charade indicator (letters next to each other).
The last letter of 'granada' is 'a'.
'a'+'tv'='atv'
'bieber' put after 'atv' is 'atvbieber'.
'atvbieber' with letters rearranged gives 'bbreviate'.
'a'+'bbreviate'='ABBREVIATE'
(Other definitions for abbreviate that I've seen before include "Shorten (text)" , "Shorten (a word)" .)