Kunal, who is making his acting debut in "Phir Se" with TV star Jennifer Winget, took to Twitter Friday to shoot down the rumours.
"Reg rumors. While I would LOVE to direct, produce or act in a film with Saif, as of now there isn't one, in the near future hopefully," Kunal, whose "Phir Se" is scheduled to release in May, tweeted.
The duo previously worked together in the highly acclaimed 2004 romantic comedy film "Hum Tum" for which Saif received the National Film Award for Best Actor.