According to the New York Daily News' Mike Mazzeo, Ellsbury has been shut down after he started experiencing headaches.
Ellsbury was previously placed on the seven-day concussion disabled list on May 24 after crashing into the wall during a game against the Kansas City Royals.
Ellsbury's continued absence will leave a void at the top of New York's batting order. The 33-year-old is having a solid bounce-back season with a .281/.349/.422 slash line.
Injuries have been a problem for Ellsbury throughout his career—the former All-Star has only played more than 140 games in a season twice since 2012.
Yankees manager Joe Girardi does have a lot of versatility with his outfield. Brett Gardner has the speed to handle the position. Aaron Hicks is a natural center fielder who has worked his way into the lineup with a surprising offensive performance.
Until Ellsbury returns, the Yankees have plenty of options to replace him and have the depth in their lineup to avoid a prolonged slump.