The Orioles released Ysla from their Triple-A affiliate in Norfolk on Thursday.
Ysla was designated for assignment by the Dodgers on Friday.
Ysla has been traded to the Dodgers for cash considerations, Jon Morosi of Fox Sports reports.
The Red Sox are planning to designate Ysla for assignment, Jen McCaffrey of The Springfield Republican reports.
Ysla was optioned to Triple-A Pawtucket, Peter Abraham of The Boston Globe reports.
Ysla was added to the Red Sox's 40-man roster on Friday, the Boston Herald's Michael Silverman reports.
Ysla was traded to the Red Sox on Monday night in exchange for Alejandro De Aza, reports Henry Schulman of the San Francisco Chronicle.