There could be some sort of fraud charges or vandalism. He was hired to perform a job and by placing that jersey in the concrete he "could have" effect the integrity of the concrete(highly highly doubtful), good luck proving this. To be honest, having been a carpenter for 8 years in my life, if you knew what was buried around and in the foundation and floor you would be amazed. Hell, if you knew how much non usage of port o potties happens on a job site both big construction and houses you would be amazed, at least around here(Madison) drywallers are famous for using tubs, toliets(not hooked up) stud spaces, and sump pump holes as toliets.