Sears has been prolific this season for the U-18's and the reserves sides scoring more than a goal a game. He has also been capped at England U-19 level twice and has recently been given a spot in some of the first-team squads.
Tony Carr told the official site, "Even though Freddie was already under contract, it is an indication that if a boy pushes on, does well and catches the eye the club will recognise that with a new contract. That is an incentive for any young player to keep working, keep improving and if they show sufficient improvement they will be able to extend their stay at the football club.
"He has been with us since a very young age. It is a real endorsement of the academy system - another local boy nurtured from a very young age into the professional ranks.
"We have got high hopes for him for the future.
"It is a bit early for him to start thinking about what he might do and what he might not do but it is another stage in his development and we are pleased for him."