Real Madrid defender Derik Ösede is attracting Premier League interest.
The young Spaniard could be made available by Real for loan next season after the Castilla's failure to win promotion from the Segunda B this term.
The 22 year-old defender has been watched by Watford, Leicester City and Southampton.
Saints boss Ronald Koeman made a personal check on Osede last month.
Osede was born in Madrid to a Nigerian father and a Spanish mother.