The striker has put pen to paper on a new one-year deal, which includes an option for a further year, keeping him at the club until at least the end of the 2017/18 season.
Luer, 22, joined the Tigers from Burgess Hill Town in 2015 before playing six times in all competitions under Steve Bruce last season, scoring twice.
This season Luer has been limited to just 57 minutes of first team action for the Tigers, coming in August's 3-1 win over Exeter City in the EFL Cup.
Tigers midfielder Daniel Batty, meanwhile, has also penned a new two year contract.
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