I criticise including circle in maroon (7)
I believe the answer is:
isolate
'maroon' is the definition.
(I've seen this before)
'i criticise including circle' is the wordplay.
'criticise' becomes 'slate' (I've seen this before).
'including' indicates putting letters inside.
'circle' becomes 'o'.
'slate' going around 'o' is 'solate'.
'i'+'solate'='ISOLATE'
'in' acts as a link.
(Other definitions for isolate that I've seen before include "Set apart, quarantine" , "Cause to be alone" , "Put into quarantine" , "Place or set apart" , "split up" .)