Jose Mourinho has spent a massive €185 million (R3.5 billion) on transfers this window, but here are five Manchester United bargain buys – including Cristiano Ronaldo – who turned into absolute superstars.
Tired of reading? Click through the gallery to see United's five best bargain buys.
With only a few hours until the transfer window closes, United's official website listed the following five players as the club's top bargain buys.
Cristiano Ronaldo (£12.24 million [R233m], from Sporting Lisbon)
Although £12.24 million for an unknown teenager hardly sounds like a bargain, Ronaldo turned out to be one of the greatest buys in United history. He scored 118 goals in 291 appearances for the club, helped them to lift eight major trophies and was voted the Ballon d'Or winner in 2008. He left for a then world record fee of £67.76 million in 2009.
Edwin van der Sar (£2 million [R38m], from Fulham)
The Dutch goalkeeper joined United in 2005 and finally filled the gap left by legendary shot-stopper Peter Schmeichel. Van der Sar went on to break the world clean-sheet record and was instrumental in the club's penalty shootout UEFA Champions League triumph over Chelsea in 2008 – one of 11 titles he won with the Red Devils.
Ole Gunner Solksjaer (£1.5 million [R29m], from Molde)
The Norway striker joined the club in 1996 and famously scored the injury-time winner against Bayern Munich in the 1999 Champions League final. Overall, he netted 119 goals in 351 games for the club, and lifted 13 trophies at the Old Trafford.
Eric Cantona (£1.2 million [R23m], from Leeds United)
The controversial Frenchman became the catalyst for a spell of unprecedented success at Old Trafford. He scored 73 goals in 167 games for the club, helping United to four Premier League trophies in five years. Overall, he lifted nine major titles in just five seasons under Sir Alex Ferguson.
Peter Schmeichel (£505 000 [R10m], Brondby)
The goalkeeper joined the club in 1991, and was later described as the "bargain of the century" by Ferguson. He helped United lift 15 trophies and left the Red Devils after captaining them to the club's first treble – the first English side to do so.
Who do you think was the best bargain buy in United's history? Have your say in the comments section below.