Praised Brussels record, changing side (9)
I believe the answer is:
eulogised
'praised' is the definition.
(eulogising is a kind of praising)
'brussels record changing side' is the wordplay.
'brussels' becomes 'EU' (European Parliament is based in Brussels).
'record' becomes 'log' (log is a kind of record).
'changing' indicates anagramming the letters.
'side' with letters rearranged gives 'ised'.
'eu'+'log'+'ised'='EULOGISED'
(Other definitions for eulogised that I've seen before include "Praised formally" , "Extolled" , "Praised (someone) highly" , "given major promotion" .)