The Jukebox musicians performed 'Blame it on the Boogie' with Marlon, Jackie and Tito Jackson at the 'Michael Forever' tribute concert in Cardiff last weekend. Williams has now revealed that they intend to discuss working together again in the future.
"We discussed some things backstage about the future and they want to take us out for dinner to talk further," Williams told The Sun. "Who knows? It would be amazing."
Stating that the brothers are "all about perfection", he added: "Marlon taught us a few moves and Jackie wanted to hear more of our harmonies. He even had a word with Marvin and changed his harmony."
Stars including Christina Aguilera, Leona Lewis, Yolanda Adams, Alexandra Burke and Jamie Foxx also appeared at the event, which celebrated the life and career of Michael Jackson. Beyonce also performed via satellite link-up.
However, Jennifer Hudson cancelled her planned appearance due to "major production issues" and Black Eyed Peas also pulled out of the show citing "unavoidable circumstances".
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Watch audience footage of JLS performing 'Blame it on the Boogie' with the Jackson brothers below: