The jaywalker may bring a personal injury claim against you. He might sue you for pain and suffering, as well as damages in the form of medical and other expenses incurred.
The fact that he was jaywalking at the time of the accident would show that he’s partially responsible for the harm he suffered. And this may affect the amount he’s able to recover in damages.
Related: Why Snoring Can Cause A Car Crash
If a police report was lodged, they will investigate the matter and decide whether or not to pursue the case.