West Ham youngster Jeremy Ngakia is attracting interest from Germany.
The right-back, 19, is out of contract at the end of the season.
Liverpool and Spurs are believed to be interested in the Englishman.
And Sky Sports says Schalke - managed by ex-Huddersfield boss David Wagner - have held initial discussions with Ngakia about moving to Germany next season.
Another unnamed Bundesliga club are also attempting to acquire Ngakia's signature.