Intend to be average (4)
I believe the answer is:
mean
This clue is a double definition.
'intend' is the first definition.
(I know that intend can be written as mean)
'be average' is the second definition.
(type of average)
'to' acts as a link.
(Other definitions for mean that I've seen before include "Far from noble" , "middle course" , "Petty" , "cause" , "Norm" .)