Matt listened to her suggestion, and although she was right about it being an absolutely mad, he realized it might be better for Shiro to be up there with his friend. Not just for them to see each other again, but to also help Allura help him properly. And heal Matt too. There was no other choice but to do this. Everyone would benefit. 

Though he expected Shiro being quite tough to carry, he and Allura would mutually depend on one another. 

So, with that thought in mind he studied her expression a bit, as if expecting her to back out of her idea, but he could tell she was serious. Matt was as well. With some pain, he stood, injured tail weakly flitting underneath him as he nodded firmly at her. With newfound determination, he slowly and gently slung Shiro's left shoulder around his own, trying to support him. 

"Okay, I'm ready. It'll be best for all of us if we took him to the human," he said lowly. "Come on, let's go. Lead the way." He wondered how they would find this human on their own. Would Shiro wake up throughout their trip and tell them the way, or will the currents of fate make them stumble upon the land man? Only time would tell, Matt supposed.