He says he'll play again next season, but don't bet on it.
Opposite of: (you can) bet on it
don't bet on it
Don't expect something to happen. I know you're hoping that the meeting starts late, but Kevin's always on time, so don't bet on it.A: "That game is going to be a blowout!" B: "Don't bet on it. There's no way they're going to get embarrassed on their home field."
don't bet on it
used to express doubt about an assertion or situation. informal