Care for very amusing person (7)
I believe the answer is:
caution
This clue is a double definition.
'care' is the first definition.
(I know that care can be written as caution)
'very amusing person' is the second definition.
(old-fashioned slang term)
'for' acts as a link.
(Other definitions for caution that I've seen before include "Official warning" , "Heed - warning - funny person" , "Give a warning to" , "Attention to possible danger" , "A surprising person" .)