Koivunen (upper body) will be in the lineup when Pittsburgh faces Columbus on Thursday.
Koivunen played in 39 regular-season outings for Pittsburgh last year, notching two goals, five assists and 36 shots while averaging 12:44 of ice time per game. A strong showing in the next two preseason games could cement the 23-year-old winger on the Opening Night roster, though he's far from a lock.