Cowboys owner Jerry Jones speaks of grief over death of ‘unique’ Marshawn Kneeland at 24

• Cowboys to pay tribute to defensive end at next game

• Jones hails defensive end's zest for life'

Cowboys owner Jerry Jones has spoken about his grief at the death of Dallas defensive end Marshawn Kneeland last week.

Kneeland, who was in his second year with the Cowboys, was 24 at the time of his death.