link.Paul - described as a “sweet guy” who sold the Big Issue in East Kilbride - never recovered following the attack in the city’s Knightswood in June last year.Cowan had denied murder, insisting he was suffering from diminished responsibility at the time.But, the 47 year-old was found guilty on Tuesday following a four day trial at the High Court in Glasgow.It emerged he already had a history of violence including convictions for assault and having offensive weapons.