The 20-year-oldâ€™s season was cut short by a horror challenge from Wigan Athletic winger McManaman.
Santon told the Evening Chronicle: â€œMy emotions are with Massadio. Iâ€™m really disappointed for him and the result.
â€œI didnâ€™t see the tackle but I did see Massadioâ€™s knee. It was a really bad and a lot of blood was coming out. Everybody said the tackle was really bad.
â€œWe must win games for Massadio. I feel sorry for him. Every win is for him and Debuchy because they didnâ€™t deserve these injuries."