Remodelled sports ground a second time (6)
I believe the answer is:
recast
'remodelled' is the definition.
'sports ground a second time' is the wordplay.
'sports ground' becomes 'rec' (I've seen this in other clues).
'a second' becomes 'as' (I've seen this in other clues).
'time' becomes 't' (abbreviation).
'rec'+'as'+'t'='RECAST'
(Other definitions for recast that I've seen before include "Give an actor a different role" , "given new form" , "reconstructed" , "Present in a different form" , "Put into a different form" .)