I have no trouble in Scott's novel (7)
I believe the answer is:
ivanhoe
'scott's novel' is the definition.
(Walter Scott novel)
'i have no trouble' is the wordplay.
'trouble' is an anagram indicator.
'have'+'no'='haveno'
'haveno' anagrammed gives 'vanhoe'.
'i'+'vanhoe'='IVANHOE'
'in' is the link.
(Other definitions for ivanhoe that I've seen before include "Walter Scott's eponymous hero" , "romance" , "On a hive (anag) -- hero of 19th century historical novel" , "Eponymous hero of famous novel by Walter Scott" , "Scott's Crusading hero" .)