 After a successful trial, Thompson signed for Leeds on his first professional contract in January 2011, initially for six months.He played 19 games for Leeds for the reserves and youth team both before and after his trial period in 2010–11 and was rewarded with a 12-month extension to his current deal in April.The departure of key senior midfielders Neil Kilkenny and Bradley Johnson on free transfers to Bristol City and Norwich City respectively during the summer of 2011 would allow Thompson to stake a claim for a first team spot for United's second full season back in the second tier of English football.