Prediction supporting English players (8)
I believe the answer is:
forecast
'prediction' is the definition.
(I know that prediction can be written as forecast)
'supporting english players' is the wordplay.
'supporting' becomes 'for' (I've seen this in another clue).
'english' becomes 'e' (abbreviation).
'players' becomes 'cast' (group of actors).
'for'+'e'+'cast'='FORECAST'
(Other definitions for forecast that I've seen before include "Meteorological surmise perhaps" , "Tell in advance what will happen" , "tip" , "Divine" , "Prophecy" .)