He was only 16 years old at the time, yet Villa paid out £250,000 (that could potentially rise to £1 million) for him.

He signed a three and a half year contract with the transfer set to cost Wolves an initial £600,000 potentially rising to £850,000 with add-ons.

Spending on healthcare in China will grow dramatically over the next five years, potentially rising to 7% of GDP.

Jerome signed for Birmingham City on 31 May 2006, for a transfer fee reported as an initial £3 million, potentially rising to £4m.

Derby went back with an improved bid on 15 June 2011, believed to be £750k up front, potentially rising to £1m.

The 18 year-old headed for Wearside last night to undergo a medical after the Sunderland offer of £8.1 million, potentially rising to £12m, was accepted.

Villa then submitted an improved offer of £18 million, potentially rising to £24 million, which was then accepted.

The fee was not disclosed, though media speculation suggested an initial fee of £4 million, potentially rising to £6 million with add-ons.

In July 1997, Phillips signed for Sunderland for a fee of £325,000, potentially rising to more than £600,000.

The fee paid to Manchester United was an initial £200,000, potentially rising to over £300,000 due to clauses.