The Pirates will select Yorke's contract from Triple-A Indianapolis on Monday, Noah Hiles of the Pittsburgh Post-Gazette reports.
Acquired from the Red Sox for Quinn Priester at the trade deadline, Yorke has slashed .303/.385/.449 with 12 home runs and 21 stolen bases between the Double- and Triple-A level this season. The 22-year-old is primarily a second baseman, but he also has a bit of experience at third base, shortstop and all three outfield spots. Yorke should play pretty often for Pittsburgh down the stretch.