Ruben Amorim was guided by Sir Alex Ferguson (Image: Getty)Sir Alex Ferguson urged Manchester United boss Ruben Amorim to 'stay positive' after a disappointing 3-1 defeat to Brighton, but the Scot's advice has sometimes backfired on managers in the past. The Red Devils, currently in 13th place in the Premier League, have struggled to find form under Amorim's leadership.The Portuguese boss has managed just six wins in 14 matches in charge. Ferguson, who was in attendance at Old Trafford for Sunday's match, gave his advice during pre-match tributes to the late Denis Law, who sadly passed away last week aged 84. "Stay positive" was the message relayed this time by Ferguson, as Amorim confirmed to BBC Radio 5 Live.But Ferguson's advice didn't always have the desired...