There are fears for Ghanaian winger Kingsley Schindler after Cologne confirmed that three people at the club have tested positive for the Coronavirus pandemic.
The 26-year-old and the rest of the entire squad were tested last week amid concerns over the latest development.
The German Bundesliga side confirmed in a statement.
"Three people tested positive, all are symptom free," the club statement said. "After an assessment of the cases by the responsible health authorities, the three people who tested positive will go into a 14-day quarantine at home."
Cologne said they would not confirm any names out of respect for the privacy of the individuals involved.
The German-born Ghanaian speedster has been training with the side despite concerns over the Coronavirus pandemic.