FMLA/WORKERS COMP

We have an employee that soon should be ex employee. He was given FMLA and that has expired, he is still on WC and that should be ending in a few months. He has received a 10% impairment rating.
My question is: Now that we know what his impairmant rating (b/c we weren't sure if he could return to his position), when his WC benefits run out , can we at that time terminate him?
My question is: Now that we know what his impairmant rating (b/c we weren't sure if he could return to his position), when his WC benefits run out , can we at that time terminate him?
Comments
Your input has certainly helped me in thinking about our obligations under ADA. Again thank you.