The 26-year-old's former partner Stephanie Ward, who has an 18-month-old daughter with the footballer, is thought to have claimed that she received contact from an unknown person.
Greater Manchester Police requested that officers in Northumbria visit Simpson, who has been issued with a Police Information Notice.
Simpson started dating The X Factor judge Tulisa Contostavlos following his split from Ward.
Source: Newcastle United Mad
Source: FOOTYMAD
