Todd J. Hollis told KDKA late Friday that his client mistook the attacker outside a Pittsburgh-area nightclub for Donald.
"I wanted to make this statement public, and to extend an apology to Aaron for what he's gone through, but I clearly know this was not him," Hollis said.
Spriggs initially said Donald gave him a concussion and a broken arm and that he needed 16 stitches near his eye as a result of an incident that took place the morning of April 11.
Donald's attorney, Casey White, said Friday his client saved Spriggs from further harm instead of attacking him. Video footage surfaced later in the day and appeared to show the Rams defender attempting to break up the altercation.
Hollis told KDKA that he and his client are no longer planning on pursuing lawsuits against Donald.