From the rulebook:
Trade Restrictions for New Owners
1) New ownership without previous ProFSL league experience will be restricted from conducting transactions for 72 hours upon admission to the league.
2) Any new owner that has a trade vetoed within the first 30 days of ownership will be required to post players on the trade block for a period of 48 hours before any trade can be posted.
I think the trade happened within 72 hours. Also, I think KC previous deal was or would have been vetoed.