Cristiano Ronaldo shoots from a penalty spot during Real Madrid's Champions League match against PSG on Wednesday. Pic/AFP

Most people will have been amazed when they saw the ball hop up just before Cristiano Ronaldo converted his penalty in Real Madrid's 3-1 win over Paris St Germain on Wednesday night. But not BT Sport pundit Rio Ferdinand, who claimed he saw his former teammate do it all the time during training when the pair were at Manchester United.