The highly-rated forward operates mainly as a winger and has featured in 19 matches for the Shots this season in their battle for the playoffs in the National League.
Despite being the longest-serving Aldershot player, approaching 100 appearances at the club, the 23-year-old has struggled to break into the side since the turn of the year and joins the Rebels hungry to compete for first-team football with the Rebels.
The winger has had previous experience in the National League South after joining Farnborough on loan for the last couple of months of the 2022/23 season. He featured on seven occasions for Boro and bagged a hattrick in their home win against Slough Town.
Willard was a product of the Southampton academy, before moving up north to Barnsley in 2017. After three years with the Tykes, he linked up with his current club Aldershot Town.