It's a strange situation with Toney. I imagine they will be doing things by the book and the lawyers will be heavily involved, but if he's admitted to enough breaches to be banned, you'd think he'd be banned right away. If further breaches are proven, just add to the ban.
Funnily enough, Brentford would probably be happy to get it started now. If it's going to be something like 6 months, they're safe from being dragged down the table and relatively unlikely to scrape Europe, so get it started now and have him back in September. They don't look like a relegation side right now but every season is different so it would be better for them for it to effect as little of next season as possible.