The Yankees reassigned Hermosillo to minor-league camp Wednesday.
Hermosillo signed a minor-league contract with the Yankees on Friday that includes an invitation to major-league spring training.
Hermosillo cleared waivers and was outrighted to Triple-A Iowa on Friday, Tony Andracki of Marquee Sports Network reports.
Hermosillo was designated for assignment by the Cubs on Tuesday, Taylor McGregor of Marquee Sports Network reports.
Hermosillo went 2-for-4 with a run scored, an RBI and a stolen base in a 3-2 win Thursday in Pittsburgh.
Hermosillo is out of the lineup for Wednesday's game against the Marlins.
Hermosillo will start in center field and bat eighth in Monday's game against the Marlins.
Hermosillo (quad) was activated from the injured list Tuesday, Taylor McGregor of Marquee Sports Network reports.
Hermosillo (quadriceps) will shift his rehab assignment to Triple-A Iowa on Thursday, Tony Andracki of Marquee Sports Network reports.