Panthers' DE Johnson had knee surgery

Charles Johnson, the Carolina Panthers’ top pass-rusher and perhaps their best defensive player, reportedly had surgery on his right knee Friday.

But it doesn’t sound like this is anything to get too worried about.

General manager Marty Hurney described the procedure as a “minor clean-out." Johnson finished last season with nine sacks, despite playing with a lower-back injury.

The Panthers aren’t setting any timetable for Johnson to return during their offseason program. But Hurney said Johnson will be ready for the start of training camp in July.