That's right about nurse training to provide more cover (8)
I believe the answer is:
reinsure
'provide more cover' is the definition.
(cover can mean insurance)
'that's right about nurse training' is the wordplay.
'that's' becomes 'ie'.
'right' becomes 'r' (abbreviation).
'about' says the letters should be written in reverse.
'training' indicates anagramming the letters (to train can mean to grow something into a shape).
'ie'+'r'='ier'
'ier' written backwards gives 'rei'.
'nurse' with letters rearranged gives 'nsure'.
'rei'+'nsure'='REINSURE'
'to' is the link.
(Other definitions for reinsure that I've seen before include "recover?" , "Take out another policy" , "Cover again" , "Pass on a risk of having to pay compensation" .)