NHL.com says that he played limited minutes in the third last game, they tried him out at practice today, but he was deemed 'unable to play'. Nothing specific other than the dread LBI.
http://www.nhl.com/ice/news.htm?id=595264
20-Team Keeper League
PTS: G=1, A=1, W=2, SO=3
Starting roster: 6F, 3D, 1G, *Keep 12 + 2 on farm
F: Kucherov, Scheifele, Eichel, Tarasenko, Rakell, Schwartz, Dadonov
D: Doughty, Josi, Ekman-Larsson, Keith
G: Hellebuyck
Farm: Tolvanen, Kaprizov
16-Team Keeper League
PTS: G=1, A=1, W=2, SO=3
Starting roster: 6F, 4D, 1G, *Keep 12 + 4 on farm
F: P Kane, Kessel, Pastrnak, Keller, Marchessault, B Schenn, Fiala, Kase,
D: Weber, Karlsson, Pietrangelo, Parayko
G: Rask
Farm: Kravtsov, A Boqvist, Necas, I Samsonov