Have you asked the club if they would be interested?
Otherwise, maybe try reaching out to Spencer Vignes and Nick Szczepanik who have had Albion books published before.
I would be shocked if he left this summer. I can't see the club letting him go given a) we are already light in midfield b) he got our most assists last year c) we have lost one experienced leader already in Lallana
It also wouldn't make much sense if he was looking to go back to Germany ASAP...
They don't report anything themselves, they just aggregate from newspapers and websites around the world and translate into English.
The original source is CalcioNapoli24 and their journalist Luca Cerchione.