Is there any reason to have a player like this on your team? Here are the other ratings:

Conditioning 83
Position Exp 100
Strength 68
Intelligence 73
Discipline 31
Max Speed 0
Acceleration 0
Tackle Ability 24
Strip Ball 28
Pass Rush 85
Run Defense 59

Have you tried him out?

I picked up one, he runs fine most of the time, sometimes not so much. I think he trips over his shoe-strings or something.

I've been curious about 0 speed players myself. I've seen post that said it doesn't matter and they aren't that slow but I've never kept them or played them on my teams.

you should check him, at least. He may surprise.

I played a guy worse and he still made plays. Granted I cut him after preseason. Move him to DT as a space eater to clog up runs.

it would take him 2 plays to get off the bench and into the game..lol

I just don't understand if he has speed it should be listed. That would change his rating and maybe make him a bit more decent to possibly keep.

I know there was a post somewhere about 0 speed players ... I just couldn't find it.

In that post about the 0 speed players, it was said that 0 speed players were the slowest players on the field, that's all.
I have a linebacker with very little peed that still plays well. I think they make up for the speed with other attribute. Your DE seems to be a very good run stopper.