Why would you want to encourage him to make a complaint against you?
If you have stood up for yourself protecting your shed then stand up to these threats of intimidation. Either deal with it through the police ie make a complaint of harrassment against him or deal with it yourself. Did you report the intial burglarly attempt on your shed? If not that is why he is now targetting you for his trainers. Tell him if he continues to harass you, you'll report him to the police for burglarly, harassment and extortion with threats and tell him that his trainers he wore when he burgled/attempted to burgle your shed have now got unique dye on them from your fire extinguisher will interest the police greatly. This is the best approach.
However if you don't fancy involving the police then tell him if he doesn't leave you alone then you'll make sure that his crummy trainers are the least of his worries

. He's hardly going to fess you up to the police for ruining his trainers if you can nail him for burglary with them! Sounds like he's a bit dim.
Some time ago I had some local teenagers 16-17 yr olds who thought it funny to bang really hard like drums on our front door and run away. They did it several times early evening and late at night. It was becoming a real nuisance and TBH quite frightening especially when they started shouting abuse as well. We had never met these scrotes or had any contact with them whatsoever.
After about a fortnight, having just had another incident the 3rd or 4th I think, we were at our wits end as we had been discussing whether we were going to call the police as it had gone beyond a joke to go through all their procedures and parlarver where in all likelihood nothing would be done and even if the scrotes were caught they would not be punished, or try and speak to the scrotes themselves, or hope that they would stop. Anyway as we were getting ready to go out shadows appeared at our front door and heavy whispering, it was almost dark outside, they did it again. We were a just a little frightened to say the least and stunned. A few moments went by and I thought F***! I wasn't going to tolerate this any longer. The next thing I flung open the door and chased after them. I must have run for about 400m through some nearby woods eventually catching one of them and bringing him down. I was ready to give him a hiding and he knew it. He or is mates won't be doing that again is all I can say. The adrenalin was really flowing. Then one of his mates who'd been just infront of him turned and came at me with a golf club. I went for him as well shouting something at him that made him think twice plus I was rather angry. He fled. The other two just kept on running like the cowards they were. I have never seen them again. They know not to show their faces around our area again. Some times you just have to meet them on their own terms

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