Poet's game said to be taking place (8)
I believe the answer is:
tennyson
'poet's' is the definition.
(I've seen this before)
'game said to be taking place' is the wordplay.
I cannot really understand how this works, but
'taking' could be 'on' (eg one taking drugs is 'on' drugs) and 'on' is present in the answer.
This explanation may well be incorrect...
(Other definitions for tennyson that I've seen before include "The Charge of the Light Brigade poet" , "linesman" , "Poet who wrote The Lady of Shalott" , "Victorian Poet Laureate" , "C19 Poet Laureate" .)