------
As others have mentioned, it is not the football program draining money... The program generated a 2 million dollar profit for the fiscal 2014 year and a 8 million dollar profit for 2015
I cannot link said report, but you can google rutgers turning profit in football and see linked articles, one being from the asbury press, Jan. 28th.
Rutgers only received somewhere between 9 and 10 million from the big 10 this past year, if all 14 schools received an equal amount RU would have gotten almost$30 million, so the slow admittance payments are painful, but in about 5 years full payment will begin...
The figures were not available there, but the men's basketball also did not cause a drain either... Having so many other non revenue, or poor revenue sports is the real problem...
Attempts to trim programs like crew cause an unfair backlash against the finances of the football program, by those who don't follow the actual numbers.
To answer the question as to the entire debt, I would guess 4 to 5 years, when full big 10 money is available. Sumocat listed the decreasing subsides over the past three years, the added tv revenue in 4 years should close the gap to just about zero.