certainly possible, but I wonder just how big the Big 10 wants to get. With them already being at 16, do you take Washington now when FSU, Clemson, Miami, and UNC might be on the table next year?
If the Big 10 wants to go to 24 teams, then sure take Oregon and Washington and then wait for the ACC to fall apart.
I don't think the Big 10 wants to expand to that many teams and I also think FSU is negotiating through the media with the ACC. If they were serious about leaving, you don't broadcast it like this. These deals aren't made in public.