Jack Christopher Senior (born 13 January 1997) is an English professional footballer who plays as a left-back for EFL League Two club Doncaster Rovers.
[7] Senior was involved in the first-team pre-season programme,[8] but predominantly played for the Development Squad that won the Northern Division by eight points, for whom he scored two goals from 36 appearances.
"[11] He suffered an injury setback in training,[12] though he made his Luton debut on 4 October, starting in their 2–0 victory at home to West Bromwich Albion U21 in the EFL Trophy.
[16] Senior started in Luton's 1–1 draw at home to Exeter City two weeks later,[17] but missed their subsequent four matches after he was sidelined with a foot injury.
[24] He signed for National League North club Gloucester City on 26 November 2019[25] and scored on his debut four days later in a 2–2 home draw with Kettering Town.