But he's far from the only global superstar forward in the English top flight. Our friends at Squawka.com take a look at the Colombian up against the star strikers leading the lines for the Premier League's top five clubs: United, Manchester City, Chelsea, Liverpool and Arsenal.
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Deadline day saw Ajax star Daley Blind come in, but it was the signing of a Colombian superstar that really had the fans out of their seats. Falcao arrived at Old Trafford on a season-long loan for a fee in the region of £6 million - and with the deal including an option to buy at the end of the season, the 26-year-old could be a star at the Red Devils for many years to come.
The prolific Monaco striker, once of Atletico Madrid and Porto, will be hoping to recreate the form he displayed prior to his serious knee injury. So with Falcao now in the Premier League and claiming the number nine shirt, do Manchester United have the best striker in the league?
We've decided to compare his recent stats with those of the key strikers for Chelsea, Liverpool, Manchester City and Arsenal… and also with that of United's highest-rated striker last season, Wayne Rooney.
The Colombian had his first season in flashy Monaco cruelly cut short due to knee surgery, but he still managed 17 appearances in Ligue 1. To make the comparisons as fair as possible, these figures are all based on the players' stats per 90 minutes played:
But it's Sergio Aguero who is the top man. Though he played fewer matches due to his injury problems, his score of 49.42 is among the highest in Europe.
Falcao may have missed the majority of the season, but he still proved he has what it takes to provide the goods and find the back of the net. He struck 0.58 goals per 90-minutes, again higher than Giroud (0.47), who was bottom of the list once more. England international Sturridge was his usual fiery self in and around the box, second on the list with 0.83 goals - almost the same as Diego Costa produced in his stellar season for Atletico last year.
But again it's Aguero who shines, with an average of a goal per 90 minutes.
One area in Falcao's game that Louis van Gaal may look to polish slightly is his creativity and the 28-year-old is particularly short in that aspect.
With the likes of Di Maria, Herrera and Rooney providing the ammunition, Falcao may not necessarily need to find his creative side. And it's just as well, because his "chances created" score of less than one per 90 minutes (0.58) is terrible compared to Costa, Sturridge, Aguero and Giroud, with the latter two scoring far better. To make matters slightly more sour none of those chances yielded an assist - while Rooney created more than two chances a game, with one in six of those leading to a goal.
Where Falcao does shine, however, is his ability to find the net when he has a chance.
He attempted over three shots a game, lower than all his rivals, but not far off. What was a particularly interest stat in his game last term was his efficiency in front of goal. Falcao had a 60% shot accuracy, highlighting how effective he can be when presented with a chance - and a stat only equalled by Aguero of his rivals.
Add in his excellent pass completion rate of 85% - again, joint top with Aguero - and it all bodes well for Manchester United fans. He won't be a playmaker, that much is clear - but assuming that he recovers from the horrible injury suffered last term, he has every chance of being one the finest out-and-out goalscorers in the Premier League.
Best of all for Louis van Gaal is that Falcao is no flash-in-the-pan. We also compared his stats from his stellar 2012-13 season at Atletico Madrid to the Premier League's best. As you can see, the picture that emerges is even more flattering. If he can replicate that form, the Red Devils are in for a treat:
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- Premier League
- Manchester United
- Radamel Falcao
- Manchester City
- Sergio Aguero
- Atletico Madrid