The 23-year-old has three years left on his Celtic contract but wants an improved deal if the club decide to hold on to him.
Kayal told the Daily Record: "I enjoy it at Celtic and I want to stay but who knows what will happen in the next few weeks?
"These discussions are nothing to do with me. It's a question for the people who are in charge and it will depend on them.
"I like Celtic, I like the fans, I like the manager and I would be very happy to keep playing for the club.
"But they must treat me at the level I deserve."