De La Rose is out of commission with an accelerated heartbeat and there is no timetable for return.
Montreal Canadiens last injuries
Tatar missed the last game with an illness but it is expected he will suit up for Tuesday's game against the Red Wings.
New York Islanders last injuries
Boychuk has been absent from the lineup while going through the league-mandated concussion protocol and it is unclear when he will return.
Filppula is sidelined with an upper-body injury and is expected to be held out of action for four weeks.
Eberle suffered an upper-body ailment but it is not expected to impede status for Thursday's game against the Canadiens.
Clutterbuck departed the last game due to an upper-body ailment but is expected to suit up for Thursday's clash with the Canadiens.
Cizikas missed this second-straight game with a lower-body injury and it is unknown if he will be available against the Bruins on Tuesday.
Lehner has been held out of the last three games while going through the league-mandated concussion protocol. He is expected to return against the Canadiens on Thursday.
Clutterbuck has sat out the past three games due to a head injury but is expected to be in Monday's lineup against the Blue Jackets.