Notice for the AAC (UH, Cinncy, UConn, Mem) is 27 months. The buyout is $10 with the appropriate notice. If the notice is not given then the ACC will sue the school and it gets a lot more expensive. (WV/Big12 paid a total $20M because they did not give the 27 months). If
Notice for the MWC is 12 months and must be submitted before June 30 for a June 30 departure of the next year. The buyout is the final years payouts from the conference (between $3M and $6M). If the school does not provide sufficient notice then the additional fee = 2x the previous years payout from the conference.
BYU just needs time to rearrange its schedule.