If it were me, I'd forget that transfer market and return to recruiting freshmen. There's posts here about needing to play moneyball, which I agree with, but moneyball isn't all about analytics (though they help) - it's about valuing what the market undervalues (or in this case at least doesn't overvalue). I anticipate the market overvaluing the portal relative to freshmen because the big boys are going to want to spend their money on more known commodities and everyone's afraid of developing freshmen just to have them poached down the line. That leaves some value opportunities in the freshman recruiting market. Yes, you'll have to pay them with competitive raises down the road to keep them but you'll have more money to do that when you're spending less on new incoming players (because they'll be freshmen, not transfers) and in just about every industry it's considered cheaper to retain talent than to bring in new talent. That doesn't mean we can low-ball them and expect them to stay. It also doesn't mean we'll never lose anyone to a transfer. But if we're willing and able to pay them what they're worth, I do believe we can keep most of them around.
It was mentioned during our Marquette game that Shaka was yet to lose anyone to the portal because he earned his players trust by not recruiting over them in the portal himself (and I'm sure he gave them competitive raises as well).
The other side of his, regardless of if they go the freshman route or the portal route, is how important it is to be on the same page as sales and marketing. If I'm trying to sell this product, I'd also much prefer they go the freshman route because I'm going to have more success selling "come support Seton Hall students who are a part of this university community as they grow over 4 years" than I am selling "come support this group of mercenaries wearing blue and white jerseys for this year." Obviously that wouldn't be the line, but the point is the messaging would and should change based on what the team does. If we focus on keeping players around, I'm going to focus on marketing the individual players and helping our fan base get to know them. If we're fully turning over the roster every year, I'm focusing on the coach, the logo and the colors. Perhaps winning cures all, but I think one approach would be more sustainable, generate more revenue, and result in more consistent long-term winning than the other.