One cricket club hosting cricket side I considered very special (6)
I believe the answer is:
iconic
'considered very special' is the definition.
(something iconic is very special)
'one cricket club hosting cricket side i' is the wordplay.
'one' becomes 'I' (Roman numeral).
'cricket club' becomes 'cc' (cricketing abbreviation).
'hosting' means one lot of letters goes inside another.
'cricket side' becomes 'on' (cricket term, on or leg side).
'on'+'i'='oni'
'cc' placed around 'oni' is 'conic'.
'i'+'conic'='ICONIC'
(Other definitions for iconic that I've seen before include "Having the characteristics of revered person" , "that's like an emoji?" , "Highly representative" , "highly symbolic" , "Having the nature of a sacred image" .)