We’ll have a full preview of tonight’s big Monday Night Football clash between the Redskins and the Eagles momentarily, but just as we were putting the finishing touches on the post, some huge news to share: according to ESPN, the Redskins have signed quarterback Donovan McNabb to a five-year extension worth $78 million. The deal, $40 million of which is guaranteed, could potentially be worth $88 million if McNabb meets certain performance-based incentives. McNabb, who is 33, was benched at the end of the Redskins’ last game for some combination of not being able to run the two-minute drill effectively and allegedly poor conditioning.