Less than two months before the start of the 2015 IIHF Ice Hockey World Championship in the Czech Republic Kalinin suffered a head injury in the playoff game of his club team Avangard Omsk at Barys Astana.

Avangard captain Kalinin suffered the injury on Sunday at the sixth game of the series in the Kazakh capital of Astana after a hit to the boards from Barys player Roman Savchenko that was later declared as a clean bodycheck by the KHL’s disciplinary committee. Kalinin was hit into the boards and lost his helmet during the collision before falling to the ice. He had to be brought off the ice on a stretcher and was taken to the intensive care unit of a hospital where was conscious but diagnosed with a traumatic brain injury, concussion, wounds and a convulsive disorder.

Kalinin was able to leave intensive care on Tuesday but will remain at hospital in Astana for ten days before he will be able to return home according to a club statement.

According to Russian national team doctor Valeri Konov seeing Kalinin back will be less probable after hearing from the club and the local doctors. “For now we are talking about a rest of three months. And in the present situation that’s not the worst option,” Konov told Sport-Express.

The 23-year-old forward played his first IIHF Ice Hockey World Championship last year an Minsk and contributed two goals and an assist en route to gold. Kalinin also won gold in his only World Junior Championship participation in 2011.