Vacant Berkshire farmland is unlikely to be rejected (8)
I believe the answer is:
bearable
'unlikely to be rejected' is the definition.
(something you can endure or bear)
'vacant berkshire farmland' is the wordplay.
'vacant' suggests removing the centre (a vacant or emptied out form of the word).
'farmland' becomes 'arable' (arable land is land that can be farmed).
'berkshire' with its middle taken out is 'be'.
'be'+'arable'='BEARABLE'
'is' is the link.
(Other definitions for bearable that I've seen before include "possible to take" , "sustainable" , "Tolerable" , "Capable of being endured" , "accepted" .)