There shouldn't be need for a ****ing agreement. If a 1st team player is found to be positive the efl should automatically postpone the game. Its a risk to both teams. The efl guidelines are unclear and lacking.
There are lockdowns in place, whether or not you agree with it is another argument. The current situation is what it is, and based on that the game shouldn't have gone ahead. Any club can follow the rules to the letter, but you can't reduce the risk to zero so I don't see why any club should be investigated and potentially sanctioned as its an exceptional situation. The efl should be clear about this, not making it up as they go along.