Gaia, a defender, holds a Spanish passport (gained through marriage), which means he does not require a work permit to play in England.
[2] On 26 June 2006, Gaia signed a two-year contract with Conference side Stevenage Borough where he was a first-team regular.
[4] Santos Gaia signed for Grays Athletic on loan on 22 November 2007 until 1 January 2008, when the deal was made permanent for £10,000.
[7] The defender was released from Grays Athletic at the end of the season along with Nicky Eyre, Danny Knowles, Cameron Mawer and Charley Hearn.
[11] In June 2009, Gaia turned down a sizeable offer from Rushden & Diamonds and joined Cornish side Truro City instead.