Dallas Cowboys tight end Jason Witten is expected to retire in order to pursue a broadcasting career and will join the Monday Night Football crew, according to ESPN's Chris Mortensen. Witten has spent 15 seasons in the NFL, all of which have been with the Cowboys. He has only missed one game in his career, which came during his rookie season. Witten caught 63 passes for 560 yards and five touchdowns last season. He finishes his career ranked fourth on the NFL's all-time career receptions list (1,152) and 21st in receiving yards (12,448).