Of Course he will 😃 Our Sam will not die else there would be Some News of him leaving KAA. Like when Shiv died we knew it as Yash cannot do double role anymore so one of his character would die in KAA.
He may lose his memory or memory may go back when Gauri was his brothers wife. He may forget his marraige with Gauri and Love for Gauri, He may start thinking that Gauri is his brothers wife.
OR
He may get paralysed after the Operation . Cannot walk so he feels that he is a burden on Gauri so starts ill treating her so that she leaves him and marries of Prateek and lives happily. ( weather he is really paralysed or its another chaal of some evil person is a different ? )
What say friends?