Updating previous reports, Detroit Lions QB Matthew Stafford’s five-year deal includes a $50 million signing bonus and $92 million guaranteed, which are both NFL highs, according to a source. The deal will average $27 million annually, which will be an NFL record. Stafford will be guaranteed $60.5 million at signing and $86 million by the start of Year 2 of the contract, which starts next March, a league source said. The full $92 million is guaranteed upon Year 3.