Rob Gronkowski has officially retired as a member of the New England Patriots ... but not without one last effort from owner Robert Kraft to get him to suit up for "Thursday Night Football" against the New York Jets!!
The legendary tight end signed his one-day contract to end his career in Foxborough on Wednesday ... and as he put pen to paper, Kraft joked he could make it a two-day deal to give him a farewell outing against their AFC East rival.
Launch Gallery Launch Gallery GettyWhile it was obviously a joke, Gronk sure does look football ready at 36 years old .