The move could be a strong message to the big names - Manny Machado and Bryce Harper - that the Phillies hope to land next winter.
The Phillies moved their longest-tenured player in order to create an opening at shortstop for J.P. Crawford. They got a pitching prospect in exchange.
Flores, 46, spent the last five seasons as a field coordinator in the Chicago Cubs' minor-league system.
The outfielder must spend the entire season on Texas' 25-man roster or be offered back to the Phillies.
The Phillies think the third baseman can solve his struggles by hitting the ball into the air more often.
Get the latest breaking news and rumors here as free agency begins in Major League Baseball.
With Tommy Hunter and Pat Neshek aboard, the Phillies will build their bullpen around the two veterans and 28-year-old Hector Neris.
He would join Pat Neshek, who agreed to a two-year earlier this week.
The Phils manager does not believe in having rules, but "not having rules doesn't mean not having expectations."
The Phillies and Orioles have not discussed a Machado trade this offseason, according to a source. Machado, 25, is a free agent after the 2018 season.
The Phillies, a source said, are close to a deal to sign reliever Pat Neshek, who represented the team in last year's All Star Game before being traded two weeks later to Colorado.
LAKE BUENA VISTA, Fla. (AP) - Fittingly, Jack Morris reached the Hall of Fame in extra innings.
The righthander is a junior pitcher/outfielder at Calvary Christian High in Florida.