If he promises to sit tight and wait?

John doesn't exactly know where he'd even go, at this point. He hasn't been in Dranbu until this moment, he has no idea where anything is and his arm has a probable hairline fracture.

Maybe he could even start rinsing it while Ianto is gone? Get anything stuck in the wounds out and through some of the worse pain while he isn't there.

"I got nowhere to go," he replies, and tries to flick a smile but it comes out tight.