Lynn (elbow) will make a rehab start with the Cardinals' High-A Palm Beach affiliate Monday, Derrick Goold of the St. Louis Post-Dispatch reports.
Lynn, who underwent Tommy John surgery last November, appears to be at the early end of the rehab schedule. A start with High-A marks his first return to the mound since last season and a big step towards a potential return in September. More on a timetable should be established as he progresses further in the schedule.