German giants were rejected by Ralf Rangnick earlier this week
The Hammers are hopeful of welcoming back at least one defender for the London derby
Ralf Rangnick has rejected the opportunity to replace Tuchel at the Allianz Arena.
Borussia Dortmund veteran Marco Reus will leave after 12 years with the side at the end of the season, the club announced on Friday. Reus, who came through Dortmund's junior system before returning to the club after breaking through at neighbouring Borussia Moenchengladbach, won two German Cups with the side but never lifted the Bundesliga title.