A mosaic dedicated to American President John F Kennedy is being unveiled in Digbeth High Street.
The mural was taken down from its original home in St Chad's in 2000 because of redevelopment work taking place.
It has been restored by artist Oliver Budd.
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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.