Ran expert into centre of Aberdeen (5)
I believe the answer is:
raced
'ran' is the definition.
('race' can be a synonym of 'run')
'expert into centre of aberdeen' is the wordplay.
'expert' becomes 'ace' (ace is a kind of expert).
'into' indicates putting letters inside.
'centre of' means to look at the middle letters.
The middle letters of 'aberdeen' are 'rd'.
'ace' put within 'rd' is 'RACED'.
(Other definitions for raced that I've seen before include "speeded" , "Rushed" , "went at speed" , "Ran competitively" , "Dashed" .)