Cat carrier /Cat shelter (Leasowe CH46)

Hi - wondering if anyone can help with Cat carrier /Cat shelter at all?
Semi feral cat seems to be camping out in greenhouse in mums garden but looks like he needs some attention so would like to try and get him to vet to be scanned/checked /treated and then if he's OK give him some shelter now it's getting colder - until we can maybe get him more domesticated /cleaned up etc so can come in to the house if he wants to.
Thanks

       
Approximate Location         Show marker