The 20-year-old Swiss youngster is held in high regard at Craven Cottage, but remains some way down the pecking order.
"Kasami is a youngster and if everyone is sound and well he won't start, he knows that," Jol told the Fulham Chronicle.
"That's a bit of a problem with him because he wants to play all the time.
"I feel he should do a bit better and push for a starting place but he's not there yet.
"I think he could benefit from a loan spell."