The 28-year-old has signed a two year deal after leaving Priory Lane earlier this month where he spent the previous four seasons.
Luer played youth football for the Sports but his career took off after a move to Burgess Hill Town. He played his part in first half of the Hillians Ryman League South title winning season of 2014/15, however just days after netting a hat-trick against the Rebels at Woodside Road in December 2014, his transfer to Premier League side Hull City was announced.
The front man found first team opportunities hard to come by during his spell with the Tigers and was loaned out to Port Vale, Scunthorpe United, Stevenage and Maidstone United in his four years there.
He returned to the south in 2018 signing for Woking, who he helped achieve promotion from National League South via the play-offs, hitting nine goals along the way.
His return to Borough was confirmed the following season, beginning a spell in which he amassed over 130 appearances, scoring 28 times.
On Luer’s arrival, Reds boss Adam Hinshelwood commented: “Greg is a player with real quality for the level”.
“It’s a positive that he’s another local lad and he’ll give us some real competition in the forward areas”.
“He’ll be a real asset as he can play anywhere along the front line and I think his style will be really suited to how we play”.