I do really know the troubles you’ve been going through the same happened to me a few years ago when I started teaching at an Elementary school. There was a blue-eyed student that made me almost lose my spontaneity, made me cross over all methodological guidelines I’d learned during that time. Now I realize that, that was just the cornerstone for becoming a teacher. This guy was so different from the ones I had studied during the period I was at college, I had never seen someone like him. Every time I arrived at school he was there laughing at me on everything, the way I used to wear, my hear-cut, and the like. Inside the classroom, he was so different from the rest. Even there was a day when he wanted to slap my face, I had to count every start that’s in the sky. I talked to an old teacher, who unfortunately passed away, she guided me about the things I needed to do, and the strategies that needed to be followed with him. She told me that sometimes this kind of personality (off-putting) comes in handy with troubles back at home. You better need to win his trust, instead of having him as a troublemaker in your class, make him be a part of it, give him some responsibility inside the classroom (this really worked to me), there are some students who wouldn’t like the idea though. You’re the one who is in charge of everything. You could try to make him realize the importance of learning English, What would he need it for? Give it a shoot and try with differentiated activities and exercises or even better games. Games are not just a break from routines-activities, they must also contribute to the language proficiency by getting or drawing the students’ whole attention to them, and all these according to their kind of characteristics. The kind of assessments assigned to that student according to a lower achiever student. Do not put him apart, nor make him withdraw or get far from the rest. All these mentioned is for you for not being catch off guard when something sadly occur that will make you regret for not putting more emphasis on him. What's left is on behalf of you.
An advice try to look closer to the troubles that make him look so different from the rest, remember "there’s no smoke without fire".
Anthony, If you need to ask me something else this is my email I can help you. firstname.lastname@example.org
this is my sister’s but don’t be afraid of asking.