Maluleka joined the reigning DStv Premiership champions in July 2020 from title rivals Kaizer Chiefs after penning a pre-contract agreement.
Since his arrival though, Maluleka has been reduced to a fringe player at the club.
This season so far, Maluleka has featured just two times in all competitions.
Sundowns have further reinforced their squad with the signing of in-demand midfielder Teboho Mokoena from SuperSport United.
"George mf'ethu...Ayisekho indaba yakhe (it's over for him at Sundowns)," Vilakazi tells KickOff.
"We still have a Sphelele Mkhulise that is not playing, we still have Haashim Domingo and Lebohang Maboe is back training now, which adds to George's troubles.
"The issue with George is his contract at Chiefs was ending and they were offering him a one-year contract. While Sundowns were offering him a three-year deal.
"What we don't know is if it was a business deal, or whether Sundowns really needed the midfielder.
"That's the tricky part and only Pitso Mosimane can answer that.
"Him not playing obviously reduces his value, but I think he realised he was no longer a youngster when he decided to sign for Sundowns."