Carp about the Spanish bundle (6)
I believe the answer is:
parcel
'bundle' is the definition.
(I know that bundle can be written as parcel)
'carp about the spanish' is the wordplay.
'about' is an anagram indicator.
'the spanish' becomes 'el' ('the' in Spanish).
'carp' is an anagram of 'parc'.
'parc'+'el'='PARCEL'
(Other definitions for parcel that I've seen before include "plot" , "Package wrapped in paper" , "Piece (of land); something to post" , "'Bundle, package (6)'" , "Packet" .)