Carlos Guillen has been out of the Tigers’ line-up -- and out of the spotlight -- since May 4.
        Don’t look for him to return until at least the middle of July, after the All-Star break. And that is probably a best-case scenario.
        Although the Tigers haven’t announced anything officially,  Guillen revealed this weekend that he will fly to Florida on Monday to begin aggressive therapy on his injured right shoulder at a physical rehabilitation center. He predicted he will be out of action for at least six more weeks.
        The Tigers, who still have more than $32 million invested in Guillen through 2011, are understandably concerned.
        Guillen quietly flew to California on Thursday to be examined by renowned orthopedic specialist Dr. Lewis Yocum. At Yocum’s recommendation, Guillen and underwent a third MRI at Detroit Medical Center on Friday. It was determined then that he does not need surgery but does require an aggressive rehab.
        After Guillen completes his therapy, which will likely last into July, he will report to Toledo for  a rehab assignment to get his timing and his swing back. That will probably take an additional 10 days to two weeks. It will be like starting all over in spring training.
        The Tigers have definitely missed the switch-hitting Guillen’s bat, particularly because he gives them an extra left handed bat against right handed pitchers.
        Guillen, who is making $10 million this year, with two more years to go on his contract at $13 million a year, had played in 24 games and was batting just  .200 with no home runs and six RBI when he was placed on the disabled list on May 5.