That would have been the easiest part.
You would need to set up protection on the gates for people checking the tickets, preparing and training of stewards inside and out of the ground (including obtaining protective equipment for them), the concourses and toilets would have to be set-up for social distancing (not to mention cleaned as they haven't been used for months), arrangements for protection for these staff to implement these set-ups, getting the police to agree to be part of the security, getting beer and food for the concession stalls, and more!
It's a pretty massive logistical task to sort out inside of 5 days.