Training device transforming Liam’s tour (9)
I believe the answer is:
simulator
'training device' is the definition.
'transforming liam's tour' is the wordplay.
'transforming' indicates an anagram (I've seen this in other clues).
'liams'+'tour'='liamstour'
'liamstour' is an anagram of 'SIMULATOR'.
(Other definitions for simulator that I've seen before include "Train on this" , "Flight trainer" , "Device replicating external conditions" , "Machine imitating an aircraft, say, used for training" , "Device that duplicates real conditions" .)