Wynns (shoulder) declined his outright assignment to Triple-A Louisville on Saturday and elected free agency.
The Reds outrighted Wynns to Triple-A Louisville on Friday.
Wynns (shoulder) will begin a rehab assignment with Triple-A Louisville on Sept. 17, MLB.com reports.
The Reds transferred Wynns (shoulder) to the 60-day injured list Friday.
The Reds placed Wynns on the 10-day injured list Monday with a right teres major tear.
The Reds' selected Wynns' contract from Triple-A Louisville on Friday.
Wynns cleared waivers Thursday and accepted an outright assignment to Triple-A Louisville, C. Trent Rosecrans of The Athletic reports.
The Reds designated Wynns for assignment Tuesday.
Wynns went 3-for-5 with three doubles, an RBI and two runs scored in Saturday's 9-4 win over the Cardinals.
The reds selected Wynns' contract from Triple-A Louisville on Friday.