BILD says Kehrer can return to the Bundesliga this winter.
Eintracht Frankfurt are showing serious interest in the 27-year-old.
Frankfurt hope to loan Kehrer from West Ham for the rest of the season as his price will be too rich to buy this winter.
Frankfurt is in great need of strengthening its defence and Kehrer needs more playing time before the Euros at home.
Coach Dino Toppmöller appreciates that Kehrer is versatile and can play in different positions.