This is the wrong forum for this, there's a questions forum. I dunno how old this question is, but if it's old, that is why.
If he's diabetic, I would suggest that he speak to a doctor to be sure, but that glucose is going to contain the sugar he needs without the fructose. My wife is diabetic and I feel sure the jelly beans she used to self medicate contaimned glucose and not fructose. So, I would not have thought anything changes in that regard, but I think a semi random website is not the best place to get advice when you're talking about a potentially life threatening situation. I'd go to the doctor, explain you're stopping the ingestion of fructose and ask him/her how to handle it.