be up for grabs
1. To be available to anyone to claim; to be unclaimed. This last piece of cake is up for grabs—who wants it?
2. To be in a state of chaos. After the CEO's scandalous behavior was exposed, the whole company was up for grabs.
be up for ˈgrabs
(informal) available for anyone who is interested: The contract for repairing the damaged buildings will soon be up for grabs.There are thousands of prizes up for grabs in our competition!