I think he deserves to be above 88 BB minimum. (For me, even 90 BB doesn't seem to be overrating him). One funny incident that shows his strength is that during 2002 World cup, he broke two of the coach's ribs when they were practicing air ball fights.
Also, he is VERY fast!! He runs 100m in 11 seconds.
IMO cha's speed is faster than that..and his BB is so good. Possibly, This stat is fine. But he is surely faster than other Korean player.(P. Jisung ,P. Chuyoung, L. Chungyong) How about this suggestion?
TS 84 (Just one point up.Same as Fritz, Rafinha. he is really fast.) ACC 85/86 (ACC is underrated. same as Fritz, Rafinha. he often burst it.) BB 83 (Just 1point up.Same as Pander. But, he is shorter than Pander.)