Lauri Markkanen will miss the first two preseason games with back spasms
But Hoiberg isn't worried about his long term health

Bulls rookie Lauri Markkanen will miss the first two preseason games with back spasms, as reported by Vincent Goodwill. Coach Fred Hoiberg isn't worried about Markkanen's long-term health and said that this is just a precautionary move.
Bulls rookie Lauri Markkanen will miss the first two games of the preseason with back spasms. Fred Hoiberg said it's not a long term concern
— Vincent Goodwill (@vgoodwill) 2 ottobre 2017