In November 2010, he made his professional debut coming on as a substitute for Jos Hooiveld in the 57th minute of Celtic's 2–2 draw against Inverness,[4] he provided an assist for Paddy McCourt.

[6] He was at fault for the concession of the second Rangers goal, as a misplaced pass allowed Nikica Jelavić a clear chance to score.

[7] Hibs manager Colin Calderwood stated in April 2011 that he hoped to sign Towell for a longer period.

[10] He played the first match of his second loan spell only 3 days later, starting as Hibs lost 2–0 to Edinburgh derby rivals Hearts.

[11] Towell started to find first-team opportunities limited after new manager Pat Fenlon made several signings in the January transfer window.

Towell made his debut for the Sussex club in the third round of the 2015–16 FA Cup on 9 January 2016 away against Hull City where The Seagulls lost 1–0 to a Robert Snodgrass penalty.

[16] Towell scored his first goal for The Albion in a 3-1 FA Cup loss away to then National League side Lincoln on 28 January 2017.

[17][18][19] Towell's only league game with The Seagulls came against his then future loan club Rotherham United on 7 March 2017 where he came on as a substitute where Brighton won 2–0 at the New York Stadium.

[30] He scored his first goal against ŠK Slovan Bratislava in UEFA Champions League first qualifying round, but Rovers were eliminated 3–2 on aggregate.