Williams was delighted to see the Dane sign a one-year contract extension ahead of the weekend defeat at West Brom.
He hopes Laudrup and the current squad can remain together to take the Swans to the next level as they have already avoided the second season syndrome that has affected promoted Barclays Premier League clubs in the past.
But Williams also knows Laudrup could still receive a tempting offer from another club despite committing himself to the Swans until the end of the 2014-15 campaign.
He said: "We're pleased the gaffer signed the contract. We've enjoyed the season working with him.
"He's been linked to other teams which shows he's doing his job properly. That's normal.
"He signed a new contract and I don't think any of us knew he was going to do that. It was a nice surprise.
"Can we keep the squad together? Hopefully. We've got a good squad here, we get on really well, we enjoy playing.
"I can't speak for other people or for the future because it's football.
"We all know the gaffer could get an offer he feels he wants and the club want to take it. You never know what could happen. It's important we all try hard to stick together."