This sounds good, but in reality, there is little difference. Clearly, in order to finance the debt, Ineos/Ratcliffe will need to get cash from somewhere - in other words, higher dividends going forward.
Over the past few years, Man Utd has paid about 20 million pounds a year in interest and another 20 million in dividends. To finance debt of about 1.5 billion at around 8% (interest rates are currently high) would require 120 million annually.
Perhaps Ineos will say that they will not take dividends and instead get "free" sponsorship opportunities- but that would just mean replacing interest expense with lower revenues from other sponsors. I dont see how to square the circle.