Grass carrying info turned and went back (7)
I believe the answer is:
reneged
'went back' is the definition.
(I've seen this before)
'grass carrying info turned' is the wordplay.
'grass' becomes 'reed' (type of grass plant).
'carrying' is an insertion indicator.
'info' becomes 'gen' (informal term for information).
'turned' is a reversal indicator.
'gen' reversed gives 'neg'.
'reed' placed around 'neg' is 'RENEGED'.
'and' is the link.
(Other definitions for reneged that I've seen before include "Went back on (a promise)" , "Did Welsh" , "Broke a promise" , "Was a rat" , "Go back on, or revoke in card game" .)