I tore my meniscus towards the end of July right before the start of my senior season back in high school. I had a pretty severe tear (when I went under the knife a few days later the surgeon had to remove the entire portion I tore which is now replaced by scar tissue, typically they try to fix it up and push it back into place). I was able to start rehabbing it about three weeks after the surgery and after three weeks of rehab I was ready to play, so six weeks total. Missed the first three games, but I tore it about a month later than Malone plus my high school doesn't have as elite rehab and athletic trainers as Kansas State.
Malone should be good against Miami and maybe even Missouri State depending on how cautious the coaches feel and how quickly he recovers. However...my speed/acceleration was never the same after that injury. It wasn't a big deal for me because I weighed 265-270 and played OL/DL, but I did lose a few tenths of a second off my 40. Hopefully Malone's tear wasn't as serious as mine.