I still wonder why people will be asking for Alonso's even when his not officially kicked off a season with the club. Most people are already drawing conclusions with the canes played in the club world cup and using it as a yardstick. For crying out loud, Alonso's team was eliminated by the best team currently and it wasn't even early in the competition but in the semi final. He needs time to set things up.
You are right. Alonso is new to the Madrid squad. and he has never managed such a big club before. So some time is needed. We cannot test Alonso's ability through the match against PSG in the fifa Club World Cup.
If Madrid had organized a few friendlies before the start of the season , it would have been a little easier for Alonso to stabilize Madrid's performance before the start of the season. But Madrid is not playing any pre-season matches. If Madrid's performance is unstable at the beginning of the season, then Madrid will fall behind in the title race. Alonso must be aware. Even if Madrid's performance cannot be completely stabilized, they must try to earn full points in every match. Madrid will play against osasuna in the first match of the season. The opponent is not weak at all. Even then, Madrid must start the journey with a win.