The Hungarian is yet to start a game for the Cottagers since signing back in 2011, but has enjoyed a successful loan spell at non-league Dartford this season.
However, Jol has a decision to make as to whether to offer the 28-year-old stopper a new deal at the club.
"He's another player we have to make a decision on," Jol told the Fulham Chronicle.
"He's never played for the first team but was a great guy to have here. He's a good keeper, went on loan and was man of the match four times in eight games, although it was a lower level.
"We have to sit down with him and tell him what we'll do."