Swansea City's record transfer signing is André Ayew, who returned from West Ham United for £18m in January 2018 — a player the club had itself sold to West Ham for a club record fee barely eighteen months earlier. Their record sale is Gylfi Sigurðsson's £45m move to Everton in August 2017, which remains comfortably the biggest fee Swansea have ever received.
Selling a Player, Then Buying Him Back for Less
Ayew's return completes one of the more unusual round trips in this dataset. Swansea originally sold him to West Ham United for around £20.5m in August 2016, a fee that itself broke Swansea's incoming record chain at the time it was set on West Ham's side. Swansea then re-signed him for £18m on deadline day in January 2018, at a discount to what they had sold him for, and that fee stands as Swansea's own record signing today. The chain running up to it passed through Wilfried Bony's £12m arrival from Vitesse in 2013 and Borja Bastón's £15.5m move from Atlético Madrid in 2016, a deal widely regarded as one of the club's biggest transfer flops.
Sigurðsson's Second Club-Record Sale
Gylfi Sigurðsson's £45m move to Everton in August 2017 set a club record for Everton as the buyer and remains Swansea's record sale to this day, well clear of Wilfried Bony's £28m move to Manchester City in January 2015, the previous record.
Swansea sold André Ayew to West Ham for a club record fee, then bought him back eighteen months later for less money than they'd sold him for — and that discounted repurchase is still their record signing today.
Sigurðsson's fee sits well above the record sale of near-neighbours Cardiff City, Swansea's fiercest rivals in the South Wales derby.
