Do you ever watch a game? Hope that's not too harsh. While he was "sick" he played 24 minutes against Iowa State and played very well. Also, the sickness has lasted over two weeks now if that's what it is. I think the kid is going to be a fine player here over his career but it won't be because of his quickness.
I believe they said he has a pinched nerve that has been limiting him - so being out for a week with the flu and additional time with a pinched nerve is not unreasonable.