I feel sherryar is like an extended cameo in this drama. His main story arc is with his father and i guess Aaliya will play a role in making him realise his father's love for him. Then he will fall for her but she obviously will choose Salman over him.
Ikr maybe he'll also ofer to buy her father house for her .. giving light to todays roof top scene between saliya when she said she is ready to do any kind of compromise