here's a guy who in his last season before the knee injury averaged 14 ppg, 4.6 rpg, almost 2 assists, 1 block, 1 steal and 2.5 turnovers per game on 32 minutes per game.
He's not gonna get those minutes here, I think that's pretty clear - if he fills Posey's minutes (24 mpg) and he is at 75% of what he was productivity wise in his last year (reasonable to expect given injuries) (but also remember he's only 26, will be 27 in a few weeks - near the prime of many players career on the early end) we could see a guy who would be about 56% as effective as he was at his most productive given the minutes (75% of minutes * 75% health) - thats still 8 ppg, 2.5 rpg, 1 apg, 0.5 blocks/steals, 1.4 turnovers - very very similar numbers to James Posey last year....
Now I know numbers aren't the only thing, and a guy like D. Miles has relied on athleticism which he may or may not have, but to think if he can be 3/4 of what he was before, he'll still contribute here