Sergio Aguero | Manchester City
Arriving for a club record fee of £38m in 2011, Sergio Aguero was under instant pressure to perform for Manchester City.
The Argentine came with a big reputation and fans went in to raptures when he was brought on as a substitute against Swansea in the Premier League.
It took Aguero just eight minutes to start paying back that huge price tag by tapping from close range to make it 2-0.
Job done, you would have thought, but Aguero wasn't satisfied just yet.
He assisted David Silva, who made it 3-0 before unleashing a thunderous shot in injury time from 25 yards to make it 4-0 and cap what was an inspirational debut.