If he is smart , he still keeps waiting for new opportunities in the german market.
Especially at these times, where a lot is changing in the aviation market in Germany.
There is now an offer for cadets at airberlin with better conditions than Eurowings. And maybe he can work in Hamburg as well.
The golden contract that was promised to him years ago (50-60 hours a month, about 16 days off a month, 4-7k€ net as FO, pension from 55 years possible, etc.) is closed now, there is a slim chance it will open again. However, if he accepts one of those other offers, he opts out the pool for the old contract.