Arias -- hitting .321 over 17 games with Texas this season -- was placed on the DL on April 30 with a lower back strain. He started all four games in his rehab assignment with Double-A Frisco at first base, hitting .200 with one RBI over that span.
It is likely that outfielder Craig Gentry -- .231 in 13 at-bats -- will be optioned to Triple-A Oklahoma City, where he spent the bulk of last season, to make room for the versatile infielder. Gentry was given the start Friday night against the Blue Jays against left-hander Brett Cecil.
"We got two lefties [Cecil and Ricky Romero]," manager Ron Washington said. "He's still here, I just want to give him a shot to play."
Washington was also unsure who he would start against Romero on Saturday.
"Tomorrow, I may have a lefty in there against their lefty," he said. "[David] Murphy may be up there tomorrow, [Julio] Borbon may be up there tomorrow, I just haven't decided yet. They got some pretty good lefties, I just want to make sure we give ourselves a chance."