 Signing with Valencia CF in the 1995–96 campaign, Sietes was used sparingly over two seasons – underperforming mainly due to homesickness– and moved to Racing de Santander for 1997–98, where he would constantly battle top-flight relegation (which would eventually befall in 2001, with the club returning in the immediate following season with 39 appearances from the player).His career was unassuming afterwards, with stints mainly in the second division, punctuated by a season with Watford in the English Championship where he did not play one single minute.After only five games for CD Numancia in the 2007–08 campaign, with the Soria team returning to the top division after a three-year absence, Sietes moved to fourth-tier side CD Lealtad in Villaviciosa, remaining there three seasons.