Sid's return

I feel since Sid fell on grass he had no brain injury...he might lost consciousness. He might have regained his consciousness later on and begun wandering trying to get out of the jungle. So the police hence might not find him. Sid might not want to be found until he gets enough proof, solid proof against Shabnam. He might go to a small hospital or a village home, gets healed up. Once he is all healthy he goes into the city in a disguise. He finds out how DD got framed for his death. He secretly sees Roshni and wishes he could go to her n apologizes for hurting her. He also promises to come back to her soon...

this also ensures that he has no memory loss

Hope this turns out this way.

Possible also wen he might come back Roshni May see him and wen she tells everyone about it no one will believe her but she ll be adamant