McLeod, 32, was a veteran free agent signing by the Colts earlier this offseason and had been recovering from an offseason knee procedure—but has been cleared to return.
Meanwhile, Lewis suffered a season-ending knee injury during Week 8 of last season in what had become a bit of a breakout campaign for the former 2018 second round pick.
If fully recovered, he figures to at least be a key rotational defensive lineman for the Colts—given his versatility and with some pass rush ability both inside and out.
The Colts officially kick off training camp at 12:00 PM EST today at Westfield Grand Park. Due to the weather, the practice will be held indoors and limited to the first 750 fans.