José Canseco, the former major league slugger and admitted steroid user who exposed other players in his 2005 best-selling book “Juiced,” offered to keep a Detroit Tigers outfielder “clear” in his next book if the player invested money in a film project Canseco was promoting, according to a person in baseball with knowledge of the situation. ...

Four people in baseball confirmed that referrals were made from Major League Baseball to the F.B.I. regarding Canseco’s actions relating to the six-time All-Star outfielder Magglio Ordóñez, who was not mentioned in Canseco’s earlier book or in any other report on performance-enhancing drugs in baseball. All four insisted on anonymity because they said they didn’t have authority to speak about the events.