Saints are keen on signing Rayo Vallecano striker Alberto Bueno on a free transfer this summer, according to the Daily Mirror.

The 26-year-old is out of contract at the end of the season, with Inter Milan and Wolfsburg also said to be interested in him.

The Mirror claims that Saints manager Ronald Koeman has made signing a new striker a priority, due to Graziano Pelle's run of 11 Premier League games without a goal.

Former Real Madrid player Bueno, who had a loan spell at Derby in the 2010-11 season and has been capped at under-21 level by Spain, has scored 12 goals in La Liga this season.

Four of those came in his last outing - a 4-2 home win for Rayo against Levante on February 28.