Relative to nine has support, reportedly you and me (6)
I believe the answer is:
legume
'relative to nine' is the definition.
I can't judge whether this definition defines the answer.
'support reportedly you and me' is the wordplay.
'support' becomes 'leg' (leg is a kind of support).
'reportedly' indicates a 'sounds like' (homophone) clue.
'and' says to put letters next to each other.
'you' is a homophone of 'u'.
'leg'+'u'+'me'='LEGUME'
'has' is the link.
Can you help me to learn more?
(Other definitions for legume that I've seen before include "Pea, bean or lentil?" , "Plant such as the pea or peanut" , "Glue me (anag) - climbing bean or pea plant" , "mangetout for instance" , "Bean or pea, for example" .)