trio Mats Hummels
, Ilkay Gundogan
have returned to training ahead of Thursday's Europa League
quarter-final first leg against Liverpool
Both Hummels and Sokratis were omitted from Dortmund's defence in their 3-2 win
over Werder Bremen at the weekend due to a calf strain and stomach virus respectively.
Gundogan has struggled with a foot problem for some time, but according to the Liverpool Echo
, he joined the pair and the rest of his teammates in training on Tuesday.
The game will also mark the first time that Jurgen Klopp
has been in the stadium as the away manager following his departure as Dortmund boss last summer after a seven-year spell.
Klopp took charge of Liverpool in October.