Radamel Falcao's deadline day transfer to Manchester United took the Premier League surprise. The AS Monaco forward completed a £6m season-long loan deal from Ligue 1, joining the likes of Angel di Maria, Daley Blind, Luke Shaw, Ander Herrera and Marcos Rojo at Old Trafford.
Falcao's arrival is a real statement of intent from the Red Devils, who are fighting a tremendous battle to re-establish themselves as the title chasing behemoth they once were during the reign of Sir Alex Ferguson. He becomes the latest big money signing to join the English top flight club, with Louis Van Gaal orchestrating a flurry of transfer activity throughout his maiden summer in charge.
Similar to Diego Costa's arrival at Chelsea, he could have extremely positive impact at Old Trafford, dramatically transforming the club's chances of a top four finish and qualification for next season's Champions League.
Costa has enjoyed a fruitful start to life at Stamford Bridge and Louis Van Gaal will be hoping his latest marquee signing reaches similar heights. With four goals in just three games, the Brazilian-born Spanish international is already providing the prowess in front of goal that Mourinho's men have lacked for several seasons now.
The duo have, of course, experienced parallels throughout their individual careers, and at one stage, they partnered one another in attack for Diego Simeone's Atletico Madrid. Both made names for themselves at the Vicente Calderon, where they both proved unstoppable in front of goal.
During his two seasons in La Liga, prior to joining Monaco last summer, Falcao scored 70 goals—a figure only bettered by Lionel Messi and Cristiano Ronaldo. Meanwhile, Costa's record is just as mouthwatering. He scored 27 times in the league for Atletico last term, adding to the 20 in all competitions he scored in 2012-13. Their one season together in Madrid last year yielded a combined 54 goals, across all competitive matches.
Despite being very different in terms of playing style, Costa had no problems replacing Falcao so easily following his move to France. While Costa is a more all-round forward than Falcao, he is considered to lack the prolific goalscoring edge of his former team-mate - although this hasn't proven the case thus far. Nonetheless, They are both complete centre-forwards; fast, powerful, and therefore capable of bullying defenders.
United are still searching for their first win of the season under new their new boss, his start has been hampered by a chronic injury list and the unavailability of several of his new signings. Falcao could be the man to change the Dutchman's fortunes.