Southampton have contacted the police after midfielder Alexandre Jankewitz was racially abused on social media.
Jankewitz was red carded after two minutes during Southampton's 9-0 defeat to Manchester United at Old Trafford on Tuesday.
"Southampton Football Club can confirm that it has identified a number of posts on social media directing racial abuse at our 19-year-old midfielder Alex Jankewitz, following last night's result at Manchester United," a Southampton statement read.
"Abuse of any form will never be tolerated at Southampton. Our club prides itself on its inclusive nature, and supporters who stoop to such abhorrent and archaic standards are not welcome as Southampton supporters, or anywhere else within football.