Lost gray cat named Whiskers with green eyes and small white chest spot in Old West Side, Ann Arbor.

My beloved gray cat, Whiskers, went missing last night from our backyard in the Old West Side neighborhood of Ann Arbor. He's a bit shy but super friendly once he warms up to you. He has green eyes and a small white spot on his chest. If you see him, I would be extremely grateful if you could let me know!