Discovered county cricketers essentially getting call up (5)
I believe the answer is:
evoke
'call up' is the definition.
(I know that call up is the is a more specific form of the action of evoke.)
'discovered county cricketers essentially' is the wordplay.
'discovered' means to look at the middle letters (dis-covered - outer letters removed).
'county' becomes 'devon' (I've seen this before).
'essentially' indicates the central letters.
The central letters of 'devon' are 'evo'.
The middle of 'cricketers' is 'ke'.
'evo'+'ke'='EVOKE'
'getting' acts as a link.
(Other definitions for evoke that I've seen before include "Call up; elicit" , "Elicit (a response)" , "Draw forth (memories)" , "Bring (a thing) to mind" , "Prompt" .)