The receiver signed with the Indianapolis Colts, NFL Network's James Jones reported, according to sources informed of the decision.
NFL Network Insider Ian Rapoport reported that it's a prove-it deal for one year worth $5 million.
Speaking to reporters Tuesday, Grant said he's healthy.
"I can't control what [the Ravens] did. I can't control their assessment of my ankle. I've gone other places, I've seen multiple doctors and I've passed physicals; so that should pretty much speak for itself."