Deal possibly avoiding day in court (3)
I believe the answer is:
woo
'court' is the definition.
('woo' can be a synonym of 'court')
'deal possibly avoiding day' is the wordplay.
'deal possibly' becomes 'wood' (deal is a kind of wood).
'avoiding' suggests deleting specific letters.
'day' becomes 'd'.
'wood' with 'd' taken out is 'WOO'.
'in' is the link.
(Other definitions for woo that I've seen before include "Court (someone)" , "Try to get the girl?" , "Try to attract" , "Court a lady" , "Pay court to" .)