Endlessly greedy duck caught rowing team and coach again (2-7)

'coach again' is the definition.
(coach or teach again)

'endlessly greedy duck caught rowing team' is the wordplay.
'endlessly' says to take the centre (the ends of the words are removed).
'duck' becomes 'uc' (I can't justify this - if you can you should believe this answer much more).
'caught' shows a homophone (sound like) (to catch something can mean to hear it).
'rowing team' becomes 'eight' (I've seen this in another clue).
The central letters of 'greedy' are 'reed'.
'eight' sounds like 'ate'.
'reed'+'uc'+'ate'='RE-EDUCATE'

'and' is the link.