Derek Dietrich took over at second base after Solano went on the disabled list on May 7 with a strained left intercostal muscle. Upon being reinstated on June 9, he was optioned to New Orleans, where he batted .379.
Solano adds another right-handed bat off the bench after left-handed hitting Jordan Brown was optioned to New Orleans on Monday night.
"Having Solano on the bench gives us some double-switch opportunities," manager Mike Redmond said. "He can play multiple positions."
Solano and Ed Lucas can fill in at third base, second base and shortstop. So Solano could give shortstop Adeiny Hechavarria an occasional breather. He also could make starts at second base against left-handed pitchers.
"We can mix and match, or run him out there against a lefty in an all-righty lineup, as well," Redmond said.