Cristiano Ronaldo was on top of the world in the summer of 2008, having just led Manchester United to the Premier League and Champions League titles.
Real Madrid, who had been keeping an eye on the Portuguese forward, came knocking — but Sir Alex Ferguson was having none of it at the time.
In his autobiography, Sir Alex writes: "I found the boy expressing an urge to go to Real Madrid, and told him: 'You can't go this year, not after the way [Madrid president] Calderon has approached the issue.'
"I said, 'I know you want to go to Real Madrid, but I'd rather shoot you than sell you to that guy now. If you perform, don't mess us about, and someone comes and offers us a world record fee, then we will let you go.'
"I had already conveyed that message to his agent Jorge Mendes. I did well to calm him down. I told him the reason I was refusing to sell him that year was because of Calderon.
"I said, 'If I do that, all my honour's gone, everything's gone for me, and I don't care if you have to sit in the stands. I know it won't come to that, but I just have to tell you I will not let you leave this year."
Ronaldo ended up staying at Old Trafford for a further year, scoring 26 goals across all competitions and winning one final league title with the Red Devils.