The 19-year-old, who joined from St Albans City in January 2010, made his senior debut for Town as a second half substitute in the last season’s FA Cup first round replay against Corby Town, a match that Luton won 4-2.
O’Donnell was given his first start in the 2-1 FA Trophy replay win at Welling United and made five appearances in total for Town, before joining former club St Albans on loan once more towards the end of the season.