Thanks for replying. At his foster house before we got him they had like a stretcher. He has one and it sits next to his kennel. His kennel is warm and has no leaks etc. loads of light. Tried putting his blankets in his bed.
Just worried that when full winter comes while im at work he will get cold and sick. His gotten to the stage he has a slight runny nose from being stubborn.

Some dogs just absolutely hate it! My fur baby did especially. He would be quite comfortable lounging inside and as soon as he went out, it’s almost like i sent him to jail! Have you tried using the same blanket etc he has inside and transferring it outside? So he still has that scent. Perhaps another option is bringing in the kennel during the day inside so he gets used to it. If he can go inside at night, he might feel more familiar with it.

Another thought – can you check in with where you rescued him from – what types of indoor/ outdoor beds he had, the size and blankets/ toys?

Thank you for rescuing this lad.
He may be insecure not being able to see his surroundings.
Also have you checked if it cold or damp, maybe try an elevated bed under some sort of awning?
Our foster pups have always loved open beds or crates inside and shade cloth bed outside.