goldfinch chick in bother?

hello to everyone looking for advice please, we have had a pair of goldfinchs nesting in our bushes about 2 days ago we think the chick left the nest and has ended up in the bottom of an old chimney pot we have just sat on the floor in the garden the parents have been going crazy but are bringing food and going in the pot,the pot is about 4ft tall.Should we just leave  alone and the chick will eventually find the strength to fly out or do you think we should help out a some point? thankyou regards steve