Well I did have a drunken night in Carlisle 17 years ago so it is possible but with me being part Chinese, part African, I can't see any likeness.
If he has no chance of getting into the team why did the previous manager and the present manager not bring in another back-up keeper. Regarding his height, not his ability, Lee Robinson, Scott Fox, Calum Antell, even tubby Goram are hardly giants. To be fair, I would be a bit nervous if he did get the nod to start a game, but only because of his lack of game time and relatively unknown ability. All I'm saying is that he has been a good squad member, apparently with plenty of enthusiasm, who has sat patiently on the bench waiting his chance and maybe now feels he has wasted his time. As you say he is 18, plenty of time to bulk up, although why you would want a bulky keeper I do not know, so maybe he can go out on loan and get some valuable experience. Assuming that is that another keeper is definitely coming in.