Patler had a good post last year, that Barclay was horrible the year after his bad injury. But that prior to it, he looked like a viable Center and possible Guard. Last year, more than a year removed from the injury, he did not look like a tire fire, which was an absolute improvement.
I think he is a serviceable backup if healthy and recovered from the injury. But there is a definite question mark about his return from this one. No idea how serious it is.