Manchester United has done the right thing by handing over manager Ole Gunnar Solskjær to a new contract until at least 2024, with the norm representing steady progress since he returned to Old Trafford a few days before Christmas 2018.In two full seasons, Solskjaers United have finished third and second in the Premier League, accounting for two of their top three league appearances in eight years since Sir Alex Ferguson retired, reaching five cup semi-finals and playing in a European final.The real success that the club and…