Please help COSMO

I foster for local rescue but they're closed for annual leave and a cat has been brought to my attention who's owner has passed awayy. I helped find him a home and that's gone dreadfully wrong as he isn't as described. He's terrified. He is having to be crated due to his fear. He's not aggressive he's the complete opposite. As he hasn't had injections brought up to date and has lost weight I need him vet checked and injected before he can go into my cattery. I don't usually take cats in off my own back but feel I have no choice on this occasion as his only other option is being put to sleep by the family of the deceased!!! If anyone can spare even 50p it all adds up and id be eternally greatful. I can't fund his injections or possible vet care myself but if I can raise these funds I can commit too finding him somewhere safe until he can go into the cattery. I just can't see this boy put to sleep. He seems to have already been through so much!!