By ANDREW ALLSMAN
ALHAMBRA,IL-- David Perron has been battling a concussion for about 9 months now and has had his ups and downs.
Earlier this month the Blues announced that Perron wouldn't be ready for the start of the season, which confirmed many fan's beliefs.
The Blues believe Perron will play this season, but the question with concussions isn't only if, its when.
Armstrong said, Perron took a "big jump" in recent months which was reported by Jeremy Rutherford as well, but the symptoms returned.
Armstrong said recently that Perron's symptoms are fewer and farther between, but they are still there and as long as they remain Perron will be sidelined.