Former Sky Sports pundit Graeme Souness has thrown his full support behind one Manchester United legend’s initiative after paying tribute to his “old sparring partner.” Graeme Souness experienced the fierce rivalry between Manchester United and Liverpool first-hand after his remarkable playing career at Anfield. The 70-year-old Liverpool legend even crossed paths with legendary former United manager Sir Alex Ferguson during his time in the managerial dugout. Following his managerial career, Souness was a leading face on punditry for Sky Sports before he stepped down at the end of the last Prem…