Please help

My husband has a co worker who is a really bad guy.

Ok so back story on this guy and why he is in this story. This guy works woth my husband. He started working at this company about 1 year- 1 1/2 years ago. My husband tells me about his day every day. So when he started working there i would notice my husband kind of depressed. I asked him why and he told me the backstory.

This guy was a drug dealer in mexico. And not no weed or 🥤type of drug dealer. He did alot of shit down there. Eventually his problems caught up to him and he had to run to the u.s. He literally murdered a guy to have his u.s identity stolen and used it as his own.

When he started working there my husband asked his boss why was he there and turns out its his boss cousin or something familiar to him. This guy said he had changed and he wasn't a bad guy no more and he had found the right path. Buuuut thats not the case. When they are working this guy starts laughing in a evil way and they ask him whats so funny and he says nothing you'll see. My husband says its because he either did something to one of them like to their cars or he's just high and out of there. I dont trust him at all and I dont even know the guy in person. We went to my husbands other co worker house one day ( who is from the same place as this guy) and his dad told us to stay as far away as possible from him. He told my husband to be very careful around him. All the guys use to meet up at a parking lot and all go in one car to work and save gas. But my husband started driving alone to work because he said this guy will light up his "cigarette" and start smoking it in the truck with all of them in it. I told my husband hell no to never ever go with them to work and it's better for him to drive the hour long ride to work alone then to be caught up in some shit because of him.

Fast Foward to now, this guy just moved in the same mobile home park where we live. A couple of days before he moved in he told my husband in a joking way that he was going to make his life miserable by waking him up every day at 5 and making him give him rides to work.

My husband is currently in the process of fixing his status and we dont need any more problems from this guy . We dont need the manager of the property to have us tied up to him in case he acts out.

I dont know what to do. Im nervous every day. This morning my husband went to go pick up this trailer that his boss told him, filled with decking and he brought it back home because we are going to use it to fix the back porch and he came with a coworker. This guy im talking about didnt go to work and had his wife drop him off from a couple of house down in front of our house , to ride with them. Like what is he thinking. Idk guys im just ranting on or any advice will do