A memorial walk has been planned today by the family of friends of Nadish Kunwar.
20-year-old Nadish went missing on January 31 and he has not been seen since.
Police found a body in the River Derwent in the city a week ago but formal identification has yet to take place.
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Six Polish men were found at the two businesses, some living at sites, they are thought to have been paid around £1 an hour.
Tahir Mahmood was detained by Police as he was attempting to climb into the roof space of an out-building at his family’s home.
Family man Mr Javeed was the owner of Digbeth business Direct Source 3 and was shot and killed on February 3.