Johnston (lower body) will be activated from injured reserve ahead of his return to the lineup against the Rangers on Tuesday, Jeremy Rutherford of The Athletic reports.
Following a seven-game absence with a lower-body injury, Johnston will replace Aleksanteri Kaskimaki on the fourth line against the Rangers on Tuesday. The 32-year-old Johnston has contributed one assist, three shots on net, four blocked shots and 27 hits in six appearances this season.