Smith admits Crystal Palace's Kaikai will be on his radar this summer if they can bring him back on loan.
The attacker was recalled by the Eagles in January due to a lack of forward options due to injuries at Selhurst Park.
"Sullay is a super lad and a super player who did well here. We were really pleased with him," the manager told Get West London.
"It would have been great to have kept him so he could have continued the season here.
"But I understand at the time Palace needed players back, but he is certainly a player who would be on our radar (this summer) because how he did here and him doing really well."