If I were guessing, the person is probably hinting that it's Dale Jr. I don't think we ever see Junior buy a Cup team, at least not while the charter system is in place.
There have also been some rumors stirring for the better part of the last year that the Andrettis would consider getting into NASCAR, but I think there's too many moving parts there. Most notably, I'm not sure that they would want to work with any of the current manufacturers.
Ware being willing to sell out isn't exactly a shocker. Rick Ware is a business man before he is anything else, and in this case, the business just happens to be racing. IF he sells, I think it's way more likely that we see an existing team who wants to expand making a move for the charter. Who could that be?
We know it can't be HMS or JGR, as they both have 4.
RFK seems poised to be jumping from 2-3 this coming season.
RCR can't even field 2 competitive cars, no reason to add a third.
Trackhouse is expanding from 2-3 this season. Doubt that they go ahead and make the jump to 4.
Legacy can't field 2 competitive cars.
I don't think Spire is in the right spot to make that jump.
Penske has 3 drivers and has now won the last 3 championships. I'm not sure why they haven't already made the move to 4 cars. I have to think they could land the sponsorship. Outside of them, I don't see an existing team that's ready to make that move.