Perez was slated as the Royals' starting catcher until he suffered the injury during warm-ups on Tuesday. The injury apparently occurred when his cleats caught in the dirt while shifting to catch a pitch.
Originally thought to be a minor injury, Perez was flown back to Kansas City on Wednesday to prep for surgery after an MRI revealed the tear.
The 12-14 week recovery timetable given by Perez's doctors means the catcher won't be able to get back into action until mid-June.
Dutton confirms that the Royals front office is now looking to acquire a catcher to fill the void created by Perez and Pina's absence.