Bear in mind that legally, people don't get made redundant, positions do. So were the company to agree to your request, they would have restrictions on back filling the vacancy (and yes, I know a lot of companies ignore these facts but that is one of the things that keeps the WRC busy).
Who told you the new line manager didn't want to work with you. Is it the new line manager or just company gossip, is there a history between the 2 of you.
Personally I'd be requesting a face to face with the line manager to understand and discuss what is going on?