I have now cancelled this training session and we will now start on Wednesday 7th September instead.

That's because we screwed up against Enfield Bears last night, meaning we now have to win that match on Thursday 1st September instead of giving 'anybody' a run-out and treating training the night before as more important.
We also have a lot of those 25-plus players going down with injuries or changing their mind about signing up/playing this season.