Phillies Triple A right-hander Jason Grilli will be in the majors within the next few days.

Maybe it will be with the Phillies. Maybe it will be with the Pirates or another club.

Grilli, 34, has received at least one major-league offer, and the Pirates are among the teams interested in him, according to major-league sources.

The Phillies, who must decide within three days of a rival offer whether to promote Grilli or allow him to depart as a free agent, are “on the clock,” one source said.

The Pirates are seeking to add an established eighth-inning reliever. Grilli does not fit that description, but would give the team additional bullpen depth.

Pirates manager Clint Hurdle had Grilli with the Rockies in 2008 and ’09 – and Grilli was especially effective in ’08, producing a 2.93 ERA in 51 games.

Grilli missed all of ‘10 recovering from right knee surgery. He signed a minor-league deal with the Phillies that gave him the right to leave for another team on June 1, but was on the disabled list with a right lat strain at that time.

A scout who saw Grilli recently said he was throwing 93 to 95 mph with a power slider.

Grilli is 4-1 with a 1.93 ERA and three saves in 28 games at Triple A.

-Ken Rosenthal