User blog comment:TheDoctor230/Vigilante/@comment-26373999-20170918062657/@comment-5536445-20170918220524

Lost the rights to Deadshot? Dude, Warner Bros. has the rights to all the DC characters. Unlike Marvel, DC can use whatever character they want. It's just that for marketing purposes, any secondary character featured in the DCEU would first exit the Arrowverse, which helps distinguish the movies from the show.

Plus, Deadshot's character arc was fulfilled already, so it would be a stupid move to bring him back from the dead just for this role.