Teams on the way to an entertainment (8)
I believe the answer is:
sideshow
'an entertainment' is the definition.
(sideshow is a kind of entertainment)
'teams on the way' is the wordplay.
'teams' becomes 'sides' (I've seen this before).
'on' is a charade indicator (letters next to each other).
'the way' becomes 'how'.
'sides'+'how'='SIDESHOW'
'to' acts as a link.
(Other definitions for sideshow that I've seen before include "Minor but diverting incident" , "Unimportant" , "affair at a fair" , "Wished so for minor incident or issue - at fair?" , "Subordinate issue" .)