Keep/leave your options open - Idioms by The Free Dictionary
keep/leave your options open
keep (or leave) your options open avoid committing yourself.
1996 Colin Bateman Of Wee Sweetie Mice and Men Have it your way. We'll go to Princetown. But I'm keeping my options open. If there's any more trouble…we're out, we're home.
keep/leave (all) your ˈoptions open avoid making a decision now so that you still have a choice in the future: Doing business with him is sometimes quite stressful. He likes to keep all his options open until the very last minute.