Asa 5550 configuration - repost 2

I have my router(vpn concentrator) connect to outside world. Inside i have dmz and asa. I have my own publick space. All my vpn connection are configure in router. A client ask me to create a vpn only for him in asa (Cisco ASA SSLVPN using Certificates for 2-factor Auth). I have already a vpn for him in router. Is that possible? If yes i m waiting your offer. Only ccie - ccsp - ccnp please.