Lidge has been sidelined with a sprained right knee since June 7.
"That's more than likely what we'll do," Phillies manager Charlie Manuel said before Wednesday night's game at Tampa Bay.
Lidge is 0-3 with a 7.27 ERA and 13 saves in 19 chances after going 48 for 48 last year, including the postseason. The right-hander threw a scoreless inning for Single-A Clearwater on Tuesday night.
Also, Manuel said left-hander Scott Eyre, out with strained left calf since June 12, could be back in the next seven to 10 days.