As has been said the club is debt free, but have massive revenue streams at nearly £440 million (20/21 figures) just from commercial deals, factor in the money they generate from loans and player sales.
So spending like they are is well within FFP for at least this season and next as they are more then breaking even in revenue.
The big questions should be can Potter get the best from these players, or any manager that follows, and can they grow there revenue streams even bigger ?