First of all, thanks for your replies, it is good someone gets involved in this so that this debate gets relevance.
I must have explained my point of view really badly due to your answers.
Starting with the last answer, I don't think new managers should be given teams in a division different than the last one of their countries, or at least not in the middle of a season. Moreover, when a team gets controlled by a bot all its good players are automatically removed from that team, so even if it is given to a new manager in short time, he probably won't be experienced enough to build a strong team quick enough to represent a real threat for all the other managers, at least for the rest of that season.
Anyway, that is another problem that should be discussed separately.
Replying to CrazyEye, what I meant was that the scores against that team would not count in past and future games for that season, so the results wouldn't produce more harm to the teams that had already played against it while it was still controlled by its human owner.
If this is kept as it is now, teams that already played all their games against that team while "it was good", apart from a sure worse score (if not lost the game), the other teams that still got games to play against the bot would have a season match to boost their enthusiasm and have more minutes for training without having to worry much about the minutes every player plays along the week, as you mentioned.
So, in the end, managers that already played all their games against that team before getting controlled by a bot, not only will get worse difference between points scored and received (if not lost the game, as I mentioned before); besides they will be in worse position for the rest of the season in terms of enthusiasm and training management, at least for one week, not counting the fans mood, etc.
So what I have suggested would at least repair a little of all the "damage" that managers like me suffer for those other managers leaving the game.
I hope I explained the point in a more clear way...