The 24-year-old joined Boston in May 2017 after opting to turn down the offer of a new contract with their then-National League North rivals Trinity, where he spent from September 2016 until July 2017.

The former Sheffield United youngster progressed through the Bramall Lane system before spending various spells away on loan with the likes of Alfreton Town, Bradford Park Avenue, Matlock Town and Stalybridge Celtic.

Willis has yet to feature in the league this season for the Pilgrims and will remain with the Blues until December 21st, although Boston do have a 24-hour recall clause from the outset.