United lead conceding own goal (8)
I believe the answer is:
together
'united' is the definition.
(I've seen this before)
'lead conceding own goal' is the wordplay.
'lead' becomes 'tether' (lead can mean a tether or leash).
'conceding' is an insertion indicator (inserted letters are 'let in' or conceded).
'own goal' becomes 'OG' (football abbreviation).
'tether' placed around 'og' is 'TOGETHER'.
(Other definitions for together that I've seen before include "In one another's company" , "self-confidence" , "stable" , "at the same time" , "Collectively" .)