His extension frees up more than $5 million under this year's cap, according to the Detroit News, so perhaps Quinn isn't done making big moves yet.
Stafford's annual salary under this new deal will be worth $27 million, slightly ahead of the $25 million a year that Oakland Raiders quarterback Derek Carr will be receiving. For his career, the top pick in the 2009 NFL Draft has thrown for 30,303 yards, 108 touchdowns and 87 interceptions.
Stafford, though, faces some of the same hurdles Carr did when he inked a deal that averaged $25M annually.
Ancelotti won't block Liverpool, PSG target Sanches leaving Bayern Munich
Swansea boss Paul Clement was assistant to Carlo Ancelotti at Bayern and has a good relationship with the Italian gaffer. Sanches has failed to make an impact in Germany, making only 17 appearances for Bayern in the league last season.
The Lions made the official announcement shortly thereafter. He'll earn $35.5 million this season after signing a seven-year, $215 million contract in 2014.
Fellow Fighting Scot Clayton Kershaw was already the highest paid Major League Baseball player. The deal reportedly includes a $50 million signing bonus and $92 million guaranteed.
In his 109 starts, the Lions have a 51-58 record.
Stafford's market-setting contract could also have ramifications for the Patriots' future financial decisions at quarterback. Not only has he led Detroit to two playoff berths in the past three years, but he's arguably been one of the best clutch quarterbacks in the NFL.