Right back providing extremely loose play (6)
I believe the answer is:
trifle
'play' is the definition.
(I've seen this in another clue)
'right back providing extremely loose' is the wordplay.
'right' becomes 'rt' (abbreviation as in Rt Hon- the Right Honourable).
'back' says the letters should be written in reverse.
'providing' becomes 'if' (eg 'providing it's sunny' means 'if it's sunny').
'extremely' says to hollow out the word (remove centre letters) (only the extremes of the word are used).
'loose' with its centre taken out is 'le'.
'rt' reversed gives 'tr'.
'tr'+'if'+'le'='TRIFLE'
(Other definitions for trifle that I've seen before include "Small amount; dessert" , "Sweet - little thing" , "nothing?" , "Thing of little value or importance" , "Filter (anag.)" .)