Leave hands to become cracked (2,7)
I believe the answer is:
go bananas
'become cracked' is the definition.
I know nothing about this answer so I can't tell whether this works.
'leave hands' is the wordplay.
'leave' becomes 'go' (to go is to depart or leave).
'hands' becomes 'bananas' (I've seen this before).
'go'+'bananas'='GO BANANAS'
'to' is the link.
Can you help me to learn more?
(Other definitions for go bananas that I've seen before include "Lose one's cool" , "Freak out" , "Become mad or furious" , "become very angry" , "Be extremely excited" .)