Bats agreed to welcome black hawk after name change (7)
I believe the answer is:
rebadge
'hawk after name change' is the definition.
I know nothing about this answer so I cannot judge whether this works.
'bats agreed to welcome black' is the wordplay.
'bats' indicates an anagram (slang for mad).
'to welcome' is an insertion indicator (in sense of 'inviting in').
'black' becomes 'b' (abbreviation as in pencil classifications).
'agreed' anagrammed gives 'readge'.
'readge' going around 'b' is 'REBADGE'.
Can you help me to learn more?
(Another definition for rebadge that I've seen is " Launch with new logo".)