Vasiliou signed his first professional deal with the Bees in the summer of 2019, after he broke into the first team at the back end of the 2018/19 season.
The Cypriot midfielder made several appearances in pre-season for the Bees and largely impressed manager Darren Currie.
The youngster will hope to make some more appearances this season and stake his claim for a starting spot. The tricky midfielder has also represented his country at youth level already. He featured on a few occasions in the 19/20 campaign and will hope to kick on in the 2020/21 season.