There is no problem with Arsenal's losing to PSV. It wasn't an important game for them as they already guaranteed qualifying for next round. Even their lead in the group is near guaranteed now.
We saw some rotation in the lineup unsurprisingly as well. Arteta wants his players to be ready against Nottingham. The Premier League is very crucial for them while they are in the lead especially.
Yes, after all, PSV has a target for revenge because in the previous match Arsenal managed to beat PSV. But Arsenal still have to win in the last match against Zurich, just to make sure Arsenal win the group but after all Arsenal have been confirmed to qualify.
Yes, Arsenal must keep their squad good because Arsenal also after playing against Nottingham, Arsenal's next opponent in the Premier League is playing against Chelsea. Therefore, of course Arteta does not want to push his main squad too much to continue playing in the Europa League, because player rotation will be carried out and fortunately Chelsea, because their last opponent in the Europa League is also not too difficult because even Zurich are a team that is at the bottom of the table.
After the shocking loss against Nottingham, Liverpool are going to host Leeds this week.
This is a must-win game for Liverpool I think. Because it was unacceptable to see them losing points against a much weaker team. They first seemed to be recovering after getting two wins. One of them was even against Manchester City which must have made the fans very excited. But they are still inconsistent in the league. This is an opportunity to wake up from a bad dream. Leeds are in a terrible condition. Even Leicester defeated Leeds recently so Liverpool should do the same hopefully.
Basically Liverpool are very bad for away matches so far this season, because of the five away matches Liverpool have played so far this season Liverpool still haven't got a win at all. It's different from the away match, because Liverpool's home match so far this season has not been defeated at all and because of that, I personally really believe that Liverpool will be able to win with a big score in the match against Leeds. Due to Liverpool's good trend for home matches which of course will continue, moreover Leeds are not a tough opponent and Liverpool are very dominating in their head to head.