Transfer Centre

Straight swap deal, with Alexis Sanchez going the opposite direction.

Mustafi's release clause was €40m (£34.32m at the time of the transfer), which Arsenal finally met after several lower initial bids.

Initial fee was €30m, with substantial performance based add-ons.

Lucas Perez had a release clause of €20m, which Arsenal met in full after initially trying to split the payments up in instalments.

Deal was done with Diamond Football Academy on June 13th but contract with player not signed and finalised until August 4th.

Part of a £3m package deal with Lens for both Yassin Fortune and Jeff Reine-Adelaide.

Part of a £3m package deal with Lens for both Yassin Fortune and Jeff Reine-Adelaide.

Confirmed in Romanian press as a €100,000 deal (£71,000 at the time of transfer).

http://www.arsenal.com/news/news-archive/20141024/young-duo-sign-professional-terms

Leaked transfer documents show that Mesut Özil's initial fee was €44m, spread out over three instalments: €24m on 2 Sep 2013, €15m on 30 Sep 2014, and €5m on 30 Sep 2015. Our initial fee of £35.74m reflects the historic currency rates on these dates. Leaked documents also show that there is a potential €6m in performance bonuses, of which €2m has been paid as of 26 Jan 2016.

Details of the transfer were briefly posted on Malaga's website, but have been removed. The site claimed €16m initial fee + €6m add-ons.

Louis Nicollin (Montpellier chairman) was quoted saying Giroud's release clause was €12m (£9.6m at the time of transfer), not €15m as reported.

This transfer fee is often disputed, media reports vary from £7m initial fee all the way up to £15m initial fee. But in August 2011, then-chairman of Southampton Nicola Cortese casually mentioned in a video interview that the deal for Alex Oxlade-Chamberlain was the same as the deal for Theo Walcott. Theo confirmed in his autobiography that Arsenal paid £7m initial fee + £5m performance bonuses.

Fee confirmed by Fenerbahçe as €7m.

€3m fee, confirmed by Monaco around the time of transfer.

Ajax confirmed the details of the transfer on their website at the time of transfer: "Ajax and Arsenal FC have reached agreement about the transfer of Thomas Vermaelen. The transfer has a total worth of 12 million euro, of which 10 million fixed and 2 million variable."

Cheltenham were in desperate need of £100,000 at the time, so Jamie Edge was purchased for that sum to cover Cheltenhams debts.

Zenit themselves claimed the fee was "around £15m".

"The deal with Arsenal was £5m – £2.5m up front and £2.5m a year from the date of the transfer," said Bluebirds chairman Peter Ridsdale. "There was a discount clause if Arsenal paid early and when we contacted them to sort it all out they said: 'Why don’t we settle it up now?' "When you include the discount for early payment, Arsenal have already paid £4.8m for Ramsey."

Dinamo president Mirko Barisic claims the fee amounts to £16.25m but BBC Sport understands it is around £7.5m.

This was a drawn out saga in Norway, with Nordtveit's club asking for 20 million Norwegian kroners (£1.7m at the time), Arsenal not willing to pay that much for an initial fee. The clubs later compromised with a £500k initial fee and £1.5m after 40 first team appearances (something Nordtveit never managed).

Part of a swap deal for Ashley Cole.

In Theo Walcott's biography, he details the transfer fee: "In the end, Arsenal agreed to increase their bid to £12 million. That was £7 million immediately and £5 million in add-ons depending on how many games I played for Arsenal, whether I played for England and things like that."

€15m deal confirmed by Arsenal in a newstrack announcement in 2005. Details of performance bonuses not disclosed.

£125,000 fee rising to £550,000 after 50 first-team games.