Favouring North East? That’s lying! (5)
I believe the answer is:
prone
'lying' is the definition.
(I've seen this before)
'favouring north east?' is the wordplay.
'favouring' becomes 'pro' (being in favour of something).
'north east?' becomes 'ne'.
'pro'+'ne'='PRONE'
'that's' is the link.
(Other definitions for prone that I've seen before include "Recumbent, likely" , "Lying face down - inclined" , "Prostrate" , "Placed face down" , "Lying face down or likely to do something" .)