Relegation threatened Rayo Vallecano relied on the former Rams loanee to rescue a point against bottom side Real Betis with a stoppage-time equaliser.
The season started well but a run of four wins in the last 26 league games saw them drop from fourth and dreaming of promotion, to nineteenth and the relief of not dropping down a division.
Despite that, Bueno became a firm favourite with the fans who were disappointed to see him leave at the end of the campaign and return to Spain.
The 25-year-old is now plying his trade with Vallecano who moved out of the La Liga relegation zone after a 2-2 draw at Betis. Bueno equalised after 51 minutes following the opening goal for the home side from former Wigan defender Antonio Amaya.