Worry about ring, antique, as predicted (8)

'predicted' is the definition.
('foretold' can be a synonym of 'predicted')

'worry about ring antique' is the wordplay.
'worry' becomes 'fret' (fretting is a kind of worrying**).
'about' means one lot of letters goes inside another.
'ring' becomes 'o'.
'antique' becomes 'old' ('old' can be similar in meaning to 'antique').
'fret' placed around 'o' is 'foret'.
'foret'+'old'='FORETOLD'

'as' acts as a link.