The Pirates are expected to recall Kelly from Triple-A Indianapolis ahead of Friday's game against the Marlins, Francys Romero of BeisbolFR.com reports.
The 22-year-old will be looking to make his big-league debut after posting a 4.50 ERA, 1.48 WHIP and 47:24 K:BB across 54 innings with Indianapolis. Kelly appeared in 13 games, making 10 starts, at Triple-A. He's expected to work out of the Pittsburgh bullpen.