Odds on second one mentioned to make a splash (8)
I believe the answer is:
splatter
'make a splash' is the definition.
(I've seen this before)
'odds on second one mentioned' is the wordplay.
'odds' becomes 'sp' (betting abbreviation for starting price).
'on' means one lot of letters go next to another.
'second one mentioned' becomes 'latter'.
'sp'+'latter'='SPLATTER'
'to' is the link.
(Other definitions for splatter that I've seen before include "Of a cloud in space" , "Splash with sticky liquid" , "Splash noisily, about" , "Splash, splutter" , "Gruesome sort of film" .)