In contact with board about article up for discussion (2,3,5)
I believe the answer is:
on the table
'up for discussion' is the definition.
(something on the table is being discussed)
'in contact with board about article' is the wordplay.
'in contact with' becomes 'on' (to be on something is to be touching it).
'board' becomes 'table' (both can mean food).
'about' means one lot of letters go next to another.
'article' becomes 'the' (the definite article).
'table' after 'the' is 'thetable'.
'on'+'thetable'='ON THE TABLE'
(Other definitions for on the table that I've seen before include "open for discussion" , "Where to lay out fighting irons" .)