"...told Arnold that their client would not be staying if they failed to qualify for the CL"
No one is asking if he'd like to stay or not, he signed a contract that says he'll play for the club until 2023.
He even signed a 25% pay cut in case they don't qualify for CL.
As much as I'd like him to leave and not create a huge problen for ETH before the season starts, I wish there would be more clubs holding their players accountable for their contracts.
I mean if said players turn shite a year into their 5 year contracts, they still have to be paid for the remaing 4 years..
Same with Lewandowski at Bayern, requesting to leave just because the club talked about buying another striker?! Let them play some reserve football to bring those egos back to earth.