The 31-year-old has yet to commit his future to the west London side, with his current deal set to expire next summer - but the Dutch boss is confident of securing the experienced defender's signature.
|WE NEED TO COMPETE - JOL
|11/2||Fulham are 11/2 with William Hill to win away at Chelsea on Wednesday night
"We are talking to [Hangeland]," he told the Fulham and Hammersmith Chronicle. "He knows what we've offered him is good so hopefully he will make a decision in the next month or so. We're optimistic."
Fulham currently sit in ninth place in the Premier League with 16 points from 13 games, but lost 1-0 to Stoke City on Saturday afternoon.
Hangeland missed the match at the Britannia Stadium due to the three-match suspension he received for a straight red card during the Cottagers' 3-1 home defeat to Sunderland last weekend, and will be out until the game against Newcastle on December 10.