Bayer Leverkusen is a different club and they have good players which he can confirm because Xabi Alonso worked with them to achieve a very good result, I believe ETH will put in his effort to ensure he achieve a better result than Xabi Alonso.
I hope so, because the truth is I don't have a bit of faith in Ten Hag who in my opinion was the main destroyer of MU, he caused great destruction at all levels in that club, it could be said that now things may look different because Leverkusen left Xabi with an impeccable level, but I wouldn't get my hopes up, the truth is Leverkusen gave their confidence to a guy who did absolutely nothing significant for a club, sometimes blind is not the one who sees, but the one who doesn't want to see.