Number 4. José Kléberson
The second Brazilian player on this list, Kleberson looked like a great signing following his 2002 World Cup performance that he put on in South Korea and Japan.
While multiple big-name clubs were chasing his signature, he eventually signed with United for £6.5 million in the summer of 2003.
In his second appearance, Kléberson was injured and would only make 20 appearances over the course of two seasons.
In August, 2005, he was sold to Beşiktaş for €2.95 million, and would eventually end up terminating his contract there.