Great Dane missing - Reward!

Have you seen this dog? Please help me find my Great Dane! He is a fawn colored, neutered, 5 years old, big friendly boy with dark un cropped floppy ears. The left side of his face has dark marbling (merle) as well as his ears. He has dark splotching going down the middle of his back. He is hopelessly lost and no chance of getting home. He may or may not have his tags. I need your help in finding him! He just does not stay long enough in one spot for me to get him.

Olathe, Kansas