Deal with proposal (8)
I believe the answer is:
approach
This clue is a double definition.
'deal with' is the first definition.
(synonyms)
'proposal' is the second definition.
(I know that approach is a type of proffer)
(Other definitions for approach that I've seen before include "Move towards" , "golf shot" , "What happens before landing" , "Come near or nearer to" , "Border on" .)