If he wants to go IB he needs to seek out Prof. Ben Soprenzeti. He is largely responsible for RU's undergrad push into the white shoe IBs. Make sure he is prepared for that meeting. Soprenzenti will help anyone but doesn't suffer fools or the unprepared very well.
He has zero chance of landing an IB internship as a soph. He should take a corp finance internship with a blue chip company in a sector he likes--pharma, tech (lots of tech action in NYC), retail (pay will be crappy compared to the others) or FinTech (Bloomberg, Thomson Reuters) or FinServ. OR...
As also mentioned, something in one of the consulting firms may be possible--but the elite firms are probably already into their selection process (McKinsey, Bain, BCG). One of the Big 4 firms is still a possibility (Deloitte, PWC, E&Y and KPMG). These firms have Financial Advisory practices, which can relate to Investment Banking (though Investment Bankers and their fragile egos and little dicks will tell you that Big 4 Advisory and IB advisory is not in the same stratosphere). Big 4 advisory will give him a test of the work cycle and what it feels like to be on a deal. An internship for a rising junior will largely be the same in either environment--errand boy, working as a first year's bitch on pitch books, etc. But it is great for the resume and the pay and perks will be better than something in a corp finance department.
Lastly, as a general trend, the best and brightest of top tier undergrad and MBA business schools are shifting away from Wall Street. Those people are looking for tech (Google, Apple, Tesla, Facebook) and/or start-ups. Wall Street will always attract talent, but the real difference makers don't want to sit behind a desk at Goldman anymore.
having just gone through the recruiting process out of an MBA program, if I could offer you one piece of advice for him, I would tell you to convince him to learn how to code during his last two years. It will pay him back many times over even if he never writes a line of code in his professional life. The ability to communicate with the geeks is a huge differentiator in the current environment. Additionally, it is practically expected for every position at one of the tech companies--whether your job requires it or not.