Two members of staff at Borussia Monchengladbach have tested positive for COVID-19.
The Rheinische Post claim that one player and a physio at the Bundesliga side have tested positive and have entered two-week periods of quarantine.
Training has continued at the club, with the Bundesliga hopeful of resuming later this month.
Monchengladbach themselves are yet to confirm the news.
On Monday, the German Football League (DFL) announced that of 1,724 tests conducted at clubs in the top two divisions since last Thursday, 10 had come back positive.
Three of those came from FC Koln last week.
Bundesiga 2 sides Dynamo Dresden and Erzgebirge Aue have also produced positive tests.
A second wave of tests is being conducted this week, but not all have been evaluated yet.
It's hoped that the top two tiers in German football can resume on May 15.
Chancellor Angela Merkel is due to hold a conference call with with state premiers to sign off on measures to ease the lockdown in Germany on Wednesday.
A Thursday meeting of the DFL is expected to sign-off on the return to play behind closed doors.
Writing for Kicker on the proposed return, Bundestag vice-president and DFB Ethics Committee chair Thomas Oppermann says the loss of TV revenue that would accompany a cancelled season "would threaten the very existence" of many clubs.
He wants to see football clubs afforded the same opportunities as other businesses re-opening in the wake of the pandemic.
Oppermann adds, "Around 56,000 people are employed in and around football in Germany.
"At a time when we are discussing when we will "start up" the individual economic sectors and under what conditions, it would be unfair to refuse to consider football."
He also feels that football will return in Germany "a little more humble" than how it entered the current crisis in March.