Why has clough fallen out with Collins?

[A.B.Yaffle 24]

Collins has been one of Sheffield united's best players over the last few seasons. So why is Clough selling him? I never wanted Clough at our club and he is doing his best to prove me right. He doesn't pick players on ability. McNulty is another one who will be leaving in January because Clough doesn't like him. When he starts, he is the best player (ie

v Saints). So Clough drops him again. I know this won't happen because McCabe is stubborn, but the only way we'll get out of this league soon is if we ask Warnock to replace Clough.