Actually, I expected those reactions.
The reason why I don't really like Busquets is that when he's "pressing" up front, he lets the hole midfield empty and when we played against teams like PSG or Bayern, they were just doing one or two pass to eliminate his pressing and then they had the midfield to start their counter attack, with the slow Busquets trying to recover...
I think that a lot of goals we conceded last season were because of him.
Secondly, I found him TOO skinny comparing to Song. When we play against physical teams (Chelsea, Bayern, Real Madrid) he can't stand and when this is to strong for him he dives.
Anyway, this is my opinion and you can disagree but Song deserves to play more next season and should be a starter if Busquets isn't efficient .