Columbus Crew SC winger Cedrick Mabwati contracted Malaria while on international duty.
The DR Congo international has returned to the club but he is questionable for Saturday's game against the New York Red Bulls, a team spokesperson told MLSsoccer.com.
Mabwati thanked fans for their support on Twitter.
Thank you for all the messages of support and encouragement.Every day I feel increasingly better. I will be back soon more strongufffdufffdufffdufffdu270cufffdufffdufe0f
- Cedrick Mabwati (@11CedrickM) June 23, 2016
Columbus coach Gregg Berhalter told reporters said the illness was only the latest in a series of unusual setbacks for his team.