He hesitates to declare we're nearly all around (7)
I believe the answer is:
waverer
'he hesitates' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'declare we're nearly all around' is the wordplay.
'declare' becomes 'aver' (averring is a kind of declaring).
'nearly' means to remove the last letter.
'all around' means one lot of letters goes inside another.
'were' with its last letter taken away is 'wer'.
'aver' placed inside 'wer' is 'WAVERER'.
'to' is the link.
Can you help me to learn more?
(Other definitions for waverer that I've seen before include "One who can't make up his mind" , "ambivalent figure" , "Irresolute person" , "One who is irresolute" , "Shilly-shallier" .)