Alejandro Garnacho could do what Cristiano Ronaldo did with Sir Alex Ferguson at Manchester United

Sir Alex Ferguson was of a betting persuasion long before Cristiano Ronaldo came to England's shores and Ronaldo embraced the culture with his own wagers.

Ferguson and a 19-year-old Ronaldo had a bet on him to score 10 goals in 2004-05 - his second season. Ronaldo came one short on nine, with his spot kick in the FA Cup final shootout rightly discounted.

After a progressive 12 goals in 2005-06, the stakes were raised with a £400 wager for Ronaldo to hit the 15-goal mark in 2006-07. Ronaldo hit that mark with a penalty at Tottenham in February 2007.

He ended that campaign on 23 goals and if Ferguson was brave enough to continue gambling he would have had to downsize from his Wilmslow abode. Ronaldo's apex at United came in 2007-08 with a staggering 42 goals.

READ MORE: 'I trained under Ruud van Nistelrooy and can become Manchester United's number nine'

READ MORE: 8/10s and 7/10s - United player ratings vs Brentford

Alejandro Garnacho, like Ronaldo, is a Latino winger, teenage debutant and FA Cup final goalscorer. The FA Cup and the League Cup were also the first domestic trophies Ronaldo got his hands on.

Garnacho, not 21 until next year, is more important to United than Ronaldo was at the same age. The most matches a teenage Ronaldo started in succession for United was eight and the eighth was on his 20th birthday. For Garnacho, it was 38.

It made his substitute status in the first weeks of the season mystifying. Garnacho has now started half of United's 12 games but completed 90 minutes in their past four Premier League games.

He is also their highest scorer with five goals. That is half the tally he managed last season. Garnacho literally went one better than Ronaldo did in his 20th year by getting a perfect 10