Manning’s agent, father shoot down retirement report

We’ve established that Rob Lowe is buddies with Colts owner Jim Irsay. That necessarily mean Lowe has the inside scoop about a possible Peyton Manning retirement. Two of the men that are closest to Manning shot down the rumor Lowe started. “Noooo . . . he ain’t retiring,” Manning’s father Archie told ESPN’s Chris Mortensen. “I…