Jesus is speaking about himself. This can be stated clearly. Alternate translation: "I, the Son of Man, will" (See: [[rc://en/ta/man/translate/figs-explicit]])
The words "given over" mean "betrayed" or "put into the power of." This can be stated in active form. Alternate translation: "someone will hand the Son of Man to" or "they will hand the Son of Man over to" (See: [[rc://en/ta/man/translate/figs-activepassive]])